Can The Foxsur Pulse/Repair Battery Charger Repair A Bad Battery?
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- Опубликовано: 2 май 2020
- Quite a few RUclips videos tell me that these little smart chargers can't desulfate batteries. My (Buddhist) view in life is never to believe anything I hear or read. I listen, but then I do my own research and make up my own mind.
To research this issue I carried out a test on my own battery, which was quite degraded. Watch the video to find out the result!
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Foxsur Smart Battery Analyzer (Amazon): amzn.to/3S10p6t
Foxsur Smart Battery Charger (ALI Express): s.click.aliexpress.com/e/_Dm3...
Foxsur Smart Battery Analyzer (ALI Express): s.click.aliexpress.com/e/_Ddb...
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Beyond your coverage of the subject matter, your delivery is superb. Very well put together video. Clear, precise, and properly thorough. I subscribed primarily based on this.
You flatter me 😌 Thank you!
My battery went from being fine to being bad over the course of about 3 months requiring a charge at decreasing intervals until it got to the stage I was charging every other day, it’s an old battery 6 years+. I put the charger in Repair mode and left it for 18hrs, I then turned it back to normal charge mode and it went straight to fully charged. I haven’t had to charge for over a week and the battery still has plenty of kick to it. Thanks for a great video and saving me £60. P.S. my charger is version 5.
That's great news! The charger has limitations and can't repair serious defects, but if it's just sulfation it can help. My battery is still going strong. Batteries don't tend to last long in hot climates, but I'm hoping the charger will get more life out of this one than usual. Thanks for your comment!
Thanks for sharing a similar (positive) confirmation that the units can and do work for seemingly *most* use cases.
Thank you, sir. As a ham, CB & UHF radio operator we always keep backup batteries & inverters in case of emergency. I have a few 3.3, 7 & 12 amp gel cells & some larger lead-acid ones. These are for an emergency & is a whole lot closer with this Russin business now going on. I have this same charger. They work. I recently was given an 85 Ah battery. I topped up this 85Ah sealed leisure battery (I distill my own water) by drilling 6 holes topping it up & resealing it with hot glue so easy to remove & re-top up in the future. I had it on pulse repair overnight & it brought it back. My only test was on a 12-volt kettle that draws about 14 amps & It boiled a full kettle twice so far & close to an hour of 14 amp constant current draw & it's still well over 12 volts, but I will give it some more pulse charging. I have 2 126Ah truck batteries that I have been maintaining on pulse repair in case this Russian war business goes nova & the UK loses its power grid with conventional or EMP weapons. UK power grid is very fragile. God help us if that happened all nuclear facilities could not be maintained & would explode. If there is a god that is.
Thanks for your comment! I'm really pleased you have had success with the charger, and those 126Ah batteries are huge. I've received a few negative responses about the charger, but mostly the feedback has been positive. I never would have believed that in my lifetime I would read comments like the other ones you made. Every November we remember the terrible loss of life that occurred in the past and we all say that it should never happen again. Yet, here we are in a major confrontation that could spark another world disaster. I sincerely hope that it doesn't reach the point where you are having to rely on those batteries.
Thanks for your very intuitive video. I bought mine from Lazada to use with a 3 years old MB which I had parked for 3 months. At first, I used the AGM mode, on the bigger Foxsur charger, and it reported the battery as being full within an hour but the car would not start. Then I search the internet and came across your review and tried the "Repair" mode and viola the car started. I only used the repair mode for 14 hours and then drove the car around the block a few times. Thanks again.
That's great to hear! I've had problems with rechargeable camera batteries in the past when the charger says full, but the battery is dead. Car batteries seem to be a bit better (most of the time) and the pulse repair chargers provide another way of squeezing a little more life out of them. The charger has worked well for me so far and being so cheap I think they are something of a bargain. Thanks for taking the time to leave a comment!
Great video! Like you, my battery went dead thanks to lack of driving during covid plus summer temperatures. I have the same foxsur charger/repairer. I let it charge overnight and made a couple trips the next day, but the starts were a little slow and rough. I suspect my CCA has also been reduced thanks to damage to the battery. Sadly, that same foxsur tester/analyzer is sold out in the states, so I can’t be sure about the damage. I’m using the pulse repair now, for a day, and am hopeful the starts will be less sluggish and I’ll have indeed repaired the battery. This video you have taken the time to make is giving me hope! 🙏🏼 Thanks for making it up to help out others. The world needs more helpers.
Thanks Adam, very kind words! Your story sounds identical to mine. After my battery ran flat I recharged it successfully, but the CCA was very low. I didn't realise this until I tested it with the Foxsur battery analyser. I then repaired it in pulse mode and the CCA was restored almost back to new. Since doing that I haven't had any problems. My kids are back at school now and I'm using the car regularly again. I'm surprised to hear it is sold out in the US. I understand that these devices are generic and sold under different brand names. You can maybe find the same thing being sold with a different brand?
How did you go with the battery pulse - did it repair your battery mate?
Also, check out AliExpress - you can get one of these analyzers for about US$25 delivered
Just used a similar model charger this evening on a totally dead battery, wanted to find out if it stopped automatically when done charging, and your review has answered my question. Thanks David.
This same basic charger is sold under many different brands, but I expect they all come from the same factory! Yes, it's all automatic - if you do a repair it should switch to normal charge mode when the repair has finished - and there shouldn't be any problems with overcharging as there were with old-fashioned chargers.
Another great video Phil: it is a very helpful compliment to you previous video on the Foxsur charger.
Thank you!
@Eddie Kittredge I'm surprised it only took 15 minutes. I've had quite a lot of success with the charger, but one thing it isn't is fast. My repair operations normally take 24 hours +
Hi Phil, this is the most informative video I've seen on YT. Hat's off for that. I'm 25 hours into repair mode. This is a great little tool. My only gripe is that you can't see the live voltage when it is in repair mode. The newer version of this is around £5 more and does show live voltage. I wonder if flicking to normal charge temporarily to view live voltage would confuse this gadget and prolong the repair process?
Thanks! I didn't realise there was a new version. Appreciate you letting me know, I'll look into getting one. Whenever I've done regular charges or repairs I haven't flipped between the two modes, so I'm not sure what would happen. All of my repairs have taken in excess of 24 hours. About 27 hours, or thereabouts, so 25 hours is normal! I've had quite a lot of success with the charger, but it's slow.
@@PhilUKNet being slow is the whole point of pulse charge. That's what causes desulphation of the battery
Thank you sir for reviewing Foxsur charger, I've been tempted to pick them up as I'm shopping for chargers. Now I had witnessed what they can do!
Pleasure! I haven't used my one for a while now. During lockdowns with my kids studying online I didn't use my car and had battery problems (which the Foxsur fixed). Now that I'm using the car every day I'm not having any problems.
Thanks Phil. In the Uk here.... lockdown and all that malarkey... so loads of dead batteries around.. This was very helpful pal. thanks.
Pleasure. I've been reading that pubs and restaurants are starting to open now. It's been a crazy year. Thanks for your comment!
That's great! Thank you for the information. I got 1 too but I haven't tried it. More power to your channel and have a great day.
Thanks for your comment. You have a great day too!
Nice video! Have exactly this same Foxsur charger (orange one) and its been doing well! Thanks.
Thanks for your comment and I'm glad to hear your charger is doing well. Most people only tend to say something when there is a problem and most comments I receive concern problems. I haven't had any problems so far and it's good to get some confirmation that I'm not the only one. I think we are in a majority!
I have this battery charger. This is what most people don't understand about it. In most cases, it's not necessary to pulse charge a car battery for more than eight hours with this charger. Then, you're supposed to leave the battery connected to the charger for about two hours after the charger shows a full charge. That would completely charge the battery. I have a 12-volt lead-acid car battery that had went dead a few times. The battery never would hold more than 12.2 volts. I pulse repaired the battery with this charger for eight hours. The battery had 12.8 volts after that. It did have 13.4 volts immediately after I disconnected it from the charger. The typical lead-acid car battery is supposed to have 12.6 volts when it's fully charged.
Thanks for the info. It's a real science and, as you say, few people have any deep knowledge. Including me! I followed the instructions and, as a result, had to wait until around 25 hours until the pulse charge finished. It then reverts to a normal charge, and the manual advises leaving it in normal charge mode for another hour. Admittedly, 25 hours seems like a very long time, and 8 hours sounds more reasonable, but without any deep knowledge of what's actually happening inside the battery, I was just following the instructions. It's always useful to get a different view.
@@PhilUKNet I'm sure most people would expect this charger to be able to sense when a battery does or does not need to be repaired. It's obvious to me that it doesn't have that capability. There may be more expensive chargers with that capability. This battery charger does eventually change from pulse charging to regular charging at around 25 hours. That's not based on anything except for a timing mechanism. From what I've read about pulse charging, the battery charger is in a state of charging and discharging the battery. That's how it reconditions the battery. Of course, it never completely discharges the battery. That would cause damage to a 12-volt lead-acid battery.
@KingsportMan I don't know. I assumed that while it was pulse charging, it was also monitoring voltage and resistance in order to ascertain when the pulse charge had done its job. If you're correct, in that this cycle is based solely on time, that's quite disappointing.
@@PhilUKNet I watched another RUclips video of a guy using this charger. His 12-volt lead-acid battery would not hold more than 6 volts. He had to press the charger's repair button to start pulse charging the battery. The charger didn't start doing that automatically. He spent three to four days pulse charging that battery. He finally decided to stop pulse charging the battery. There is no indication of when the battery has been repaired unless someone has a battery analyzer like the one you used to make this video.
@@PhilUKNet I think most people will be satisfied with the results simply because of this charger's voltage display. All they have to do is unplug the charger and look at the voltage display. There shouldn't be anything wrong with the battery if the charger is showing that the battery has at least 12.6 volts. My only concern was that some people might spend days pulse charging a battery for no good reason. That's only supposed to take about eight hours.
This is a great video. My wife got me a pulse repair charger that looks pretty much identical to yours (including the display) but in orange and with the brand BUDDYGO. After a couple of times recently of having to charge the battery after not driving my merc that much recently due to lockdown, and finding the battery completely dead (not even enough juice for central locking to work!)
I'm now trying the pulse repair and hoping that this works and saves me having to get a new battery! Fingers crossed! Thank you for your clear video!
@@Swindongareth Thank you! My problems also started due to the virus. My kids were doing on-line learning at home and there was no need to use my car. When I did try to use it I found the same as you - a completely dead battery and no central locking. The charger got my battery working again and has been fine since. I think they are all produced in one Chinese factory and sold in different colours with different brand names. No doubt, they're all identical inside. I hope the repair is successful!
From France . VIdeo well done, simple and very informative (SAE ; CCA ..). There is no information about batteries , i think it's to sell them more and more ! I already bought their charger now i will buy their tester . Keep on the good job ...
Thank you!
I don't know why I read your comment in a French accent
Most informative video I’ve found on the subject of pulse battery repair. Thank you.
Thank you!
I've read elsewhere that some cars have sensitive electronics that can get damaged by pulse repair mode. Apparently the pulses are actually very brief higher voltage around 18-22 volts that breaks apart accumulated stuff on the plates. They recommend disconnecting the car negative terminal to isolate car electronics.
On a related note a guy at Sweet Project Cars channel used a welder to recondition car batteries. It surprisingly makes sense since a welder is simply a low voltage high currant power supply. But not everyone owns a welder and this charger is way cheaper.
I've made up my mind and am getting this charger too. Thank you for sharing your experience with this charger.
The user manual doesn't say anything about disconnecting the battery, but whenever I do a pulse repair I disconnect the battery terminals for exactly the reason you state. I would suggest that other people do the same - just in case. I leave the battery connected for normal charges but - as you say - car electronics aren't designed to receive brief pulses of a higher voltage. Someone else on RUclips looked at the pulses using an oscilloscope so you can see exactly what voltage is coming out of the charger.
I've never heard of using a welder! My general conclusion about the charger - and this has been verified from other comments I've received - is that the pulse repair works and that these little devices really can extend the life of a battery. I heard from someone in Ireland that he paid £28, but in Thailand I only paid around £6 so they're a real bargain too. I have no regrets at all about buying mine. Thanks for your comment!
I just a few sec a go put foxsur 7a to repair my agm 7 yr old varta (golf 7 1.6 tdi) without dissconnecting the battery. I will let You know if my golf survived or not (tomorrow). Only have I heard foxsur 7a is a great charger for little money.
@@PhilUKNet After 12 h I disconnected still pending repair. I was affraid of hhigh voltage (put multimeter 15,75 pulsing ) and put agm mode. We'll see what is going to happen.
@@radiator1979 I'd recommend disconnecting the battery leads if doing a pulse repair. The manual doesn't state this, but I think it's better to be safe than sorry. The high voltage shouldn't hurt the battery. It does what it does to try to remove the lead sulfate crystals from the plates. The repair takes a long time - from my experience around 27 hours.
@@PhilUKNet A little summary. After 12 h repair mode (still pending) Istopped repair mode and user my car in the day. Set agm mode for the night use my care early in the morning and then set repair mode for 3,5 h one more time. Got vcds and I saw that my battery from 31 Ah (68 id on the sticer) went to 45! The light are brighter and the engine start just like eye blinking. Gonna repeat repair mode in a few days. What I can tell is that do not star repair mode if battery was not fully charged previously. The whole procces was done inside engine bay (no disconnecting leads)
Very well made video and fantastic information 👏👏
Thank you 😀
I came upon this video because of your review of the Foxsur charger.
Now...I have to explain to my wife WHY I need to buy the Foxsur battery analyzer. Wish me luck!
LOL! I'm married too and I fully understand. Fortunately, these two purchases didn't break my bank account and I was able to give her complete peace of mind after checking her battery and finding it was 100%. You see, I bought it for her, not for me 😉
Kind of a wise guy you're....👍
Great video. I’ve just bought 2 of these to maintain my motorcycles and to tickle up the car battery. I quite like that tester and will look for one. Nice, waffle-free review.
Thank you! I try not to waffle, but sometimes it just happens 😏 Of the comments I've received, most have been positive but there have been a few negative ones too. I've had no problems and have been pleased with charger. The analyzer works well and is very useful. The two items complement each other well.
Used both overnight, about 14hrs. Dual-battery system in Chrysler 300 SRT8. Primary battery showing 12.5V but getting dozy. Secondary battery was worse and somewhat resurrected by the arc-welder method after a year idle and never holding much past 11V. Both indicator windows showing red. These cars are wheeled computers with much parasitic drain! After repair process both showing 13.1V after a run and both indicator windows green , holding at 12.7 . These devices undeniably work and seem to do what the arc method won’t. Seems the battery chemistry is restored. Saved me a lot of money! I’ll use these to maintain my motorcycles too. Exceeded expectations! Now someone’s going to tell us it’s impossible. 😁
@@ThreenaddiesRexMegistus That's great news, thanks for the feedback! One thing they aren't, is fast. Every repair I do takes over 24 hours so I schedule repairs when I won't need to use my car. The feedback I've received is mostly positive, with a few very negative comments. This reinforces the positive comments.
Great review. Thank you !!!
Appreciated, thanks!
Greetings from Malaysia (which is just next door to Thailand). I bought one myself on Lazada (For 45 Ringgit Malaysia = 335 Thai Bahts) , after seeing your video. Exact same unit in orange and i have to say the repair mode has mixed results. If the battery is on its way out, it may or may not repair it. But I'm in no means of discouraging. My minivan also spend half its life sitting in the porch with minimal usage. Unfortunately I do not have a battery tester so I'm relying solely on voltages to tell me roughly the battery life.
Yes, they are very cheap. After doing the video I did another repair and the result wasn't as impressive as the first time. It will be interesting to see what happens next time, but we have to remember that batteries won't last indefinitely. I find the battery analyzer useful because you get an exact number without having to guess. Thanks for your comment!
Thanks for this video it is very helpful... I have mower + car + motorbike batteries that I want to verify / repair/ charge - I have been assessing the battery condition via multimeter but not under load so maybe a few dollars on a charger and tester makes sense - also saw that after 4 months that your repair held great even more reason to invest.
The battery is still fine, but I will probably do another pulse repair soon. Someone who seems to know quite a lot about this commented and suggested doing a repair charge twice a year. Where I am in Thailand I was able to buy the analyzer and charger very cheaply and they have both been great value for money. Thanks for your comment!
i've had a good result last night with my newly purchased Foxsur pulse repair charger (same yellow one as yours) on my 2 year old Amaron 3SM battery 600CCA.... from 80% state of health (and also 80% charge) to 100% s.o.h. .... 17 hours of pulse repair mode... it didn't go into charge mode yet, but I noticed battery fluid coming out from the top of the battery (the fluid was a little dark... maybe the desultification effect?)... so I stopped the pulse charger... I was worried that the battery got damaged, but upon checking with my Ancel battery analyzer, it was already fully restored to 100% and it was also fully charged. Best investment so far (both charger and analyzer).
I'm really pleased to hear this, thanks for letting me know! I experienced the same thing doing a pulse repair. I left it repairing for over 24 hours, but it didn't actually stop and go into regular charge mode. However, the battery condition was a lot better after the repair. From what I understand about these chargers, they won't damage the battery. There's a cut-off to prevent them overcharging. I bought both the charger and analyser for a very low price and, like you, consider them to be very good investments.
Thanks, very informative
Pleasure. Thank you!
Good video. But one point you make (at 6:50) may need to be clarified. Some smart chargers won't start charging or repairing if there is not a minimum voltage on the battery. Ironically you may need to give it an initial charge (with another charger) to bring it up to a basic level (I think it is around 10v or 11v) before the 'smart' chargers will work. But Pulse charging works well to repair - I have a Foxsur unit also.
Thanks for the clarification.
Great video and review. Your Foxsur Smart Battery Analyzer (ALI Express) link is no longer working.
Do you know if your battery charger pulses are 16 volt power spikes like a Noco Genius 5 and 10 charger or CTEK charger uses? I have a Pulsetech PowerPulse passive battery desulfator on my 2001 BMW battery as preventative maintenance as Pulsetech claims that there patented frequency they use can extend battery life up to three times. I also used my PowerPulse on my other BMW battery that I let sit disconnected for a year, and it was at 11.2 volts, I tried charging it with my friends Exide 6 amp automatic charger for 14 hours and battery voltage was at 13.1 volts, yet it would not start my other car. I put the PowerPulse on it along with a 1 amp Schumacher manual battery charger for 72 hours, and left the desulfator on it for a week and it started my car right up. My point is desulfation can take up to 30 days depending on how sulfated your battery is.
I'll look into the broken link. Thanks for letting me know.
Thank's for the review. Should I dismantle the battery first from car before charge using foxsur or I just connect without dismantle the battery from car ?
When I use the regular charge mode I don't bother disconnecting the battery leads. I put the positive charger lead on the battery terminal and I put the negative lead on an unpainted bracket on the engine block.
When using pulse repair mode I don't like the idea of electricity pulsing through the car's electronics so I always disconnect the battery leads and connect both charger leads to the battery. The user manual doesn't say anything about this, but my view is that it is better to be safe than sorry.
Hi Phil....what voltage was your battery at ...at the start of pulse repair and what did it read at the end of pulse repair? Is the battery still holding up well now? Thanks
Ah I see the starting Voltage was 12.34V
I didn't pay much attention, but you found the answer! My background is mechanical rather than electrical, but I don't think that voltage is all that important. Current is where the power is. Sorry for the delay replying. RUclips doesn't always notify me of comments and I only find them when I look in RUclips Studio.
Thank you sir for your video and explanation, im on looking to buy those charger but curious is it possible to fix and charge the battery.
Your explanation is clear and keep it up doing video like this.
Sorry for my English
Thanks for your comment and don't worry about your English! Second languages are difficult. My Thai is terrible!
I too was skeptical about the repair function, which is why I was keen to do this test, but I was very pleased (and pleasantly surprised) with the result. It took the CCA from 191 to over 600, which exceeded my expectations. Had I allowed it to repair for longer the result might have been better, but the battery is good now.
I have foxsur the 12v/24v 6A model it’s look similar to this one . I have connect the 12V 55ah sealed lead acid battery and I have select repair mode .
I have found it display 24v and battery is warm on one side of the positive terminal and cold on other side .I left it on the charger 5 and half hours and I disconnect it to check the voltage, it’s charging the voltage I found to be around 10.3v . I have connect back again and leave it on repair mode still it’s getting warm and indicating the mode on repair and 24v . I have check with DMM meter the voltage is changing between 13v to 29v .
Is this normal or what should I do . There’s no switch or anything to select between 12v and 24v.
I have no experience with your model and I don't know the answer. I'm sorry!
With pulse repair mode, does it run for a set amount of time based on the battery type or does it somehow detect whether it needs to keep repairing? Asking so I know whether you can run pulse repair mode and take a break e.g. it starts raining so you disconnect and bring indoors, reconnect when dry, it's then night time and you don't trust your neighbourhood to leave it going overnight so you disconnect again and bring indoors, reconnect in the morning, then it rains so you disconnect, etc etc etc. If you did that would the device 1) never complete repair because it's set to run for a pre-determined length of time each time you begin repair, or 2) eventually complete repair because it somehow monitors the condition of the battery and only repairs when there's... stuff to repair. ?
It's the second one - it monitors the state of the battery and continues repairing until the repair is complete. Once it's complete it then switches into regular repair mode and the manufacturer recommends that you leave it charging for an extra hour in normal mode once the repair is finished. In my experience this takes a long time - in excess of 24 hours.
@@PhilUKNet Thank you for this, good to know.
I have oximizer900 12v charger. Unusually for chargers it is safe to connect with chassis if you want to charge battery?
If you leave the battery connected in the car they actually recommend attaching the negative lead of the charger to the chassis. Sometimes I forget and connect it to the battery, but I believe it's generally recommended to connect it to an unpainted part of the chassis.
Thank you so much 🌹
Pleasure!
What should i do if the orange light for the foxsur charger dosent light up I left it charging for a long time and when me and my mum tried to charge her car it didn't work
I'm not sure. There must be a fault with the charger or the battery. Maybe you can get someone to look at the battery. If that's OK, there could be a fault with charger. If it's still under warranty take it back to the retailer. Sorry I can't help more.
I watch another video on someone using the NOCO charger. Apparently that manual documentation says to initially bring to full charge first. After that then go into repair mode. I wonder what the theory behind this is. Phil, in your case, you went straight into repair mode and seems to work.
I had charged it a few days before and I had been using the car every day, but yes I agree, I should have charged it again before doing the repair. Even though the battery should have been almost completely charged, a few other people have made this point and I should have charged it again first. Thanks for your comment!
Phil, technically, do we need
To disconnect the battery
terminals when charging it,
pulse or normal ?
The manual doesn't say anything about this. Whenever I do a pulse repair I always disconnect the terminals. In the past I have done a normal charge with the terminals connected without any problems, but now I always disconnect them. It only takes a minute and it's better to be safe than sorry!
@1:52 It's not telling you it's charged, it's asking you (notice the ? mark). At 12:30v your battery it is not fully charged so this will affect the results from the analyser. hope this helps.
Thanks for the info.
I came here to say the exact same thing. A discharged battery will give a lower rating. This is why it states to fully charge your battery first.
I'm glad I saw this because I was going to say the same thing👍🏽👍🏽
I'm curious now that it has been 4 months what the capacity of your battery shows if you check it with the tester again. I'm going to grab a charger with the pulse repair function.
Good point. Thanks for your comment and thanks for the reminder! Some background first. I haven't charged or pulse/repaired the battery since making this video. I've just been doing normal driving and I don't usually drive my car at weekends. Mostly, it just sits idle Saturdays and Sundays. The rainy season has arrived in southern Thailand so I've had my headlights on quite a lot during the daytime, along with wipers and dash cam, and because it's so hot and humid all year round the A/C is always on. The test I just did showed the following: 12.75v and 533 SAE ("Good Pass", it tells me. The battery - I believe - is fully rated at 620 SAE). So, everything looks good as far as the tester is concerned and absolutely no problems with the car. It starts first time, every time, and the starter motor is strong.
@@PhilUKNet Nice one. sounds good to me.
Thank you
Pleasure!
My new 90A battery not fully charged but charger indicate Ful what can i do now i use repair mode for it ???
I've had similar issues. If you think the battery is full, don't worry. And if it's new there shouldn't be any need to use repair mode. Just use it normally for a while and try again later.
For charging or repairing, should I remove the battery from the car and use a separate place for that or it is safe to do that while the battery is in the car?
Some people might have a different opinion, but I have always thought it is safe enough to charge in the car. You need to decide for yourself, and if you think there is a risk, remove the battery before charging. If you do it in the car, I would suggest removing the positive and negative leads first. This is especially the case with repairing, as the electrical pulses may damage the car's electronics. You probably don’t need to do this with regular charging, but I think it's a good idea to remove the leads just as an extra precaution.
Excellent, clear video. Thank you. Hopefully the foxsur repairs my battery as it did yours.
Thank you! I hope you have the same success. Obviously, if your battery isn't sealed top it up with distilled water first and give yourself lots of time. The manual says 8 hours for a car battery (24 hours max), but after 26 hours mine was still repairing. Can you let me know how you get on? I'd be interested to hear the experience of others. Depending on the specific problem inside the battery, the charger may or may not be able to repair it.
@@PhilUKNet Update from me. After 2 days of trying the foxsur during the day and overnight on both normal and pulse charging the battery still did not receive current and the fan on the foxsur still never even started. I was beginning to think it was broken. In the end I called a mechanic who lent me a 9amp charger which immediately started to work and within 5 hours had charged the battery back up to 12.7v. At this point the foxsur, when connected, did register a voltage reading and attempted to trickle charge. I've since learnt that most new chargers (& cheaper version ones) with micropocessors won't give current if the battery voltage is reasonably low (I don't know the limit). My battery was only just over a year old and it'd been 2 weeks since the car wouldn't start, so not that long. I used the foxsur under the repair mode for next couple of days, just to desuphate the battery. It's meant to read FUL after it's finished repair but after 30 hrs or so never did. But since voltage was good level and it'd been under charge for a couple days I've reconnected the battery to the car. I think this foxsur device will work if the battery has only very recently stopped working but if I leave it any length of time it will not provide current. Other devices, (starting from about double the price or more) will still charge the battery even if very low voltage. So I plan to return this device and maybe get a more powerful device. Thanks for your help.
@@Taintless101 Hi, do you have a recommendation for a charger that'll charge a dead battery (low voltage)?
@@tramexz Hi, I've not bought a new one yet (as I'm using car regularly now and battery is fine) but I did a lot of research. Noco have a very well reviewed good range of products, which go up in power and price. Critically a number of their options will charge even dead batteries. They don't give voltage readings (if you want that can get a cheap multimeter anyway) but they're well reviewed. I've not bought yet but will do, two of the ones I've considering are 1) NOCO GENIUS10UK, 10-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, and Battery Desulfator with Temperature Compensation or 2) NOCO Boost Sport GB20 400 Amp 12-Volt UltraSafe Portable Lithium Car Battery Booster Jump Starter Power Pack For Up To 4-Liter Petrol Engines. Both on amazon. Check out Noco's range and pick the one that suits your battery. Hope this helps.
I just bought one and is currently repairing my car battery, but I noticed you said the fan was on whilst you tried to repair your battery ? Mine is only making a clicking sound with no fan spinning & oil & repair on display ? Is that normal ?
With Pul & repair on display (not oil)
I can't remember there being an 'oil' icon on the display. When I went into repair mode the fan started spinning slower and was noticeably quieter. However, it did remain spinning. I can't remember a clicking noise, but this may be normal. As the unit is controlled by a low voltage microprocessor it probably uses a relay for the electrical circuit to the battery and in pulse/repair mode this relay probably clicks. I didn't put my ear close to the unit and it was a noisy environment.
To recap, I don't understand the 'oil' display - perhaps yours is a different model to mine? Repair on the display is normal. The fan, I believe, should be running in repair mode, albeit slower than regular charging mode. The clicking sound may or may not be normal. I didn't notice any clicking, but I didn't listen very hard.
Let me know if the repair is successful.
Phil UK Net thanks Phil 👍 no , just to be clear ? It just states (PUL & Repair ) as red light flashes on and off , the fan is not spinning at all since 1pm when 1st connected it’s been like this since then. When I take off repair it states battery is full ? Although it’s been dead for 5 months ?
Sorry for the delay. There is a problem with RUclips not notifying me of comments. Perhaps the battery has a serious problem? The charger can desulfate batteries, but it can't fix big problems.
hi ive watched your very helpfull vids a few times over the years, and i got the fox charger bcos of you, thanks, one note at the 2 min mark on this video ,and it says is the battery charged yes, i dont think when you said that its saying yes, its actually asking you,is it charged, so when you did the test , you did it on a 12.3v battery and not 12.6 or 12.7 battery hence the first bad result ,bcos you said to the maching it was fully charged,when it asked, i might be wrong and im only saying that -, that might be the case hence the first result,
Thanks for your comment. You're probably right. It was a long time ago and I can't remember now!
You can fix any batterys with pulse repair I did a test with opening a old battery had lots of crystals after 26 hours battery had no crystals at all looked new from 4.6v to 14v made battery new again
I understand the theory, but I have never actually opened up a battery! You're very brave. Thanks for the feedback - very interesting!
I have a solar system and cannot pulse for 22 straight hrs. Can i pulse over two or three days w/ 10 hrs breaks?
Good question, but I'm afraid I don't know the answer! The documentation I've read assumes that users have a constant supply of electricity. The idea of pulsing is to remove sulfation from the lead plates. I guess that if there are breaks during the desulfation process, it will still work, but I don't know for sure.
Excellent
Thank you!
Can you leave the battery connected to the car while you charge the battery - or do you have to completely disconnect the battery before charging?
With normal charging I have left it connected in the past and there were no problems, but now I disconnect the leads just in case. When doing a pulse repair, which involves short bursts of electricity to the battery, I always disconnect the leads. The user manual doesn't mention this, but it's always better to be safe than sorry and the safest way is to disconnect the leads while charging. It doesn't take long and takes away the risk of damaging your car's electrical system.
hi there, greetings from blighty, very interesting video,how is the battery performing now? i had a battery going flat after two or three days i replaced it with a biggen' (recommended by range rover)but still got the bosch battery in the shed ,i will try this and will be getting the charger too, we're in lockup again, hows it going out there, we rarely here anything about that neck of the woods, bbc just fixates on one thing and does it to death.stay safe.
By coincidence, someone asked for an update yesterday. I did a check and everything was still looking good. These chargers are really cheap and I think they are good value. If your old battery has a serious problem it can't be fixed, but if the problem is just sulfation the pulse repair function could extract a bit more life out of it.
I don't want to get too political here, but the amount of propaganda coming out of the UK from the media (especially the BBC) scares me. I have read so many accounts of how these lockdowns are unnecessary and it is as if the government is deliberately trying to kill the economy, put people out of work and rack up huge levels of debt. Boris, who I originally thought was the right man for the job, has been a huge disappointment. Thailand is pretty much normal, with the notable exception of tourism. If tourists don't start coming back soon there will be big problems because this sector is such a large part of the economy.
Can use on the car this foxsur ? Repair mode has high voltage. Can breakdown the car working time on the car using?
I don't quite understand your question, but yes, it can be used on a car.
To use with repair mode, it is recommendable to disconnect the battery cables of the car and plug only the foxsur cables.
Bravo!!
😁
during repair mode, can you tell what voltage and Amp it is sending to the battery?
no. blinking only
Thank you for answering the question - also Cio Duque.
from other videos, you cannot desulphate if the battery already dead using foxsur charger. but some peoples said, the battery can be revive.
for me, i will take the precautions, just do the repair before the sulphate problem become too much.
That's right. It can't perform miracles, and some batteries are too damaged to repair. However, if the problem is just some sulfation on the lead plates, then the pulse repair might be able to improve it.
@@PhilUKNet i had dead battery from my brother in-law motorcycle. try to charge, the battery cannot hold the charge. but i still want to check with battery analyzer to compare good battery vs bad battery. i just order battery analyzer from online shop. maybe need to waiting 4 to 5 days.
@@omarsyahrilnorazmi3302 I bought the Foxsur one, which was cheap, and it has been useful.
@@PhilUKNet i had foxsur charger. good enough to charging my battery. many time revive my sister car battery.
When I switched on, it turned full immediately and when I pressed repair button, nothing changed on the screen. Any idea whats happening?
Not sure. I've only seen this after doing a long charge. If it finishes the charge and I put the charger back on it says full immediately, which it is. All I can suggest is using the battery some more and then trying again.
How many hours of "pulse repair" need to be done for a 5 year old car battery, which is still in working condition but the charge holding capacity had been reduced..
I can't tell you. It will depend on the capacity and condition of the battery. The manual says 8 hours for a car battery, but I left mine repairing for 26 hours and it still hadn't finished. Apparently, when it finishes repairing it switches back into regular charging mode. For a 5 year old battery with reduced capacity it could take as long as my one did.
Thanks for th response. I didn't keep it for overnight reparing.instead I did 12 hrs each for three days. Battery charge holding capacity has improved
I just wanted to know if after using the pulse repair did the battery last?
It's still going strong! The battery is rated at 620 SAE and after the pulse repair I got just over 600. I checked it again two days ago with my battery analyser and it had dropped to 500 SAE, but the analyser said it was still fine. I will probably do another pulse repair soon to see if I can increase that figure, but it takes a long time - 24 hours plus based on my last experience.
This is my suggestion.. just do PULSE charging once a year for new battery around 7-12 hours. This will extend your battery life around 5 years easily without problem. Its adviseable for vehicle with short trip due to our car alternator cannot charge enough power to the battery to conserve if you driving less than 30 minutes per day + sulfation happen overtime. My battery still going strong while reaching 4 years now with CCA around 85%. Its recommended to replace your battery when the CCA reach 50% from your original value.
Tq
Great advice, thank you!
Can we pulse charge our well working battery without damaging it?
Thanks for the advice
What are the indications that the battery cannot be repaired anymore? Does it flash in the screen as well? Thanks
It doesn't say. There's an error message if you attach the leads with the wrong polarity. After pulse repair has finished it switches to regular charging and FUL is shown on the display when the battery is completely full. I guess that if it can't do the repair it won't switch to regular charging and you won't see FUL. This happened to me, but when I checked the battery with an analyzer it had actually been repaired.
@@PhilUKNet oh ok, thanks for the info man. My truck had not been used for almost a month due to this pandemic and when i tried, the engine won't start and the starter just made single clicking sounds whenever i turn the ignition on so i figured that the battery might be discharged. I had it charged and it started but then after a day, it won't work again. I had a foxsur charger and it's the first time that im using the repair mode and hopefully, it will make the batteries good again.
@@jayvillanoza3952 I tried on 2 dead batteries. One was a nonautomotive 12V battery. Another was a car battery with shorted plates.
The car battery I tried pulsing, well didn't bring it back alive. Would stay pulsing for hours and it won't be able to repair it.
The other sealed battery, well if its already dead long time can't wake it up also.
So its best to self monitor the Pulsing activity. I doubt it can return back to normal charging .
Thanks Im gonna buy 1
I hope it works out for you. It doesn't work for everyone, but most feedback I've received has been positive. It can't repair damaged cells, but it can help if the plates are sulfated.
@PhilUKNet Thanks mate. As with life, nothing is guaranteed. But at least you made this video showing that it COULD work. Appreciate it and have a nice day!
@liquidh5226 You too, thanks!
After repairing it does the battery sustain its voltage without any load for couple of days?
I've not had any problems at all. My kids have been at home learning on-line for the past year, therefore I've used the car very little. Sometimes it sits there for a week or more doing nothing, but it starts every time. The voltage does go down when the car isn't used. Immediately after driving it and turning off the engine the voltage is 12v+, but when left for several days it can go down to almost 11v. I don't know if this is normal, but the car still starts. I guess it depends more on SoH of the battery and available current, rather than voltage.
@@PhilUKNet Thanks for yr reply, if tht's tht case I will be getting the charger really soon.
@@leefiz I've been pleased with it and most of the feedback I've received has been positive. I've done quite a few regular charges and about four pulse repairs. Sometimes the pulse repair makes almost no difference to the CCA rating, but it seems to give the battery an extra lease of life. I've also had a few negative comments. Someone recently said he had bought two chargers and both were charging at 48v, which was a safety risk. I don't know what was going on there. I bought mine on-line in Thailand and it was very cheap. For the money, it has been great. Everybody will have a different experience, but I still have no regrets. I hope it works out for you!
@@PhilUKNet Thanks again, Well there is no guarantee sometimes buying online, some will get a really good ones and sometimes not. Depends on the buyer's luck. I've also did watch few video review about this brand here in Malaysia and mostly being positive.
I will purchase it soon and it is cheap here in Malaysia just RM38.80 @USD9.70 😂
How long did the battery last after the "repair" 6 month, year, 2 years etc
It's still going strong. I did another pulse repair recently because I'm not using the car much at the moment. The CCA is down (around 450), but no problems starting. I'm not sure how much longer it will last. There comes a time when the repair mode doesn't improve anything and the battery needs to be replaced.
Unfortunately my experience with the repair function is not positive. It was a 3 year old battery for a car that see 2-3 weeks non usage every alternate months and had around 3 odd full discharge in last 6 months. The battery tester said capacity around 40%. This was a wet or flooded battery.
Tried with charging as well as the repair function.
The repair function always pulsed for 12 hours and then get reset automatically. The capacity hardly improved from 40% before to around 45%.
I believe that full discharges can cause a lot of damage and doing it three times might have been too much for the battery. My own experience has been fairly positive and I've heard the same from other people. Possibly by using the battery and trying further repairs the condition could improve? Anyway, thanks for your feedback!
Does it charge the battery as well while in repairing mode ?
Yes, it does. Once the repair is finished (which can take a long time) the battery will be fully charged and it will automatically switch to regular charge mode. The manufacturer recommends that you then leave it in regular charge mode for about one more hour.
@@PhilUKNet thanks mate for your fast reply , much appreciated 👍
Work well on my batteries. Depend on CCA and SOH. Larger CCA tooks longer to repair.. Lower SOH tooks longer time to repair.. My 380 CCA tooks about 4 hrs to brought from 90% to 100 % SOH. My 720 CCA batrery tooks 32 hrs to bring 86% to 100 %SOH.
In principle need to charge full and wait for 1-2 hrs. If it still have 12. 6 volts mean you still can desulphate. If say 10v or lower means one cell already defect due to shortage or etc. if it could not maintain charge on 12.6 with high SOH means you by mistake overfill the electrolyte level.
Have one battery that i charge from SOH 47% to 100% with 300CCA. It tooks about 11 days...
11 days! Wow! That's a long time. Thanks for your comment and advice. From the comments I have received it is clear that many people have had good results with the charger. It's not successful every time - my wife's battery became weak recently and I tried a pulse repair, but it didn't improve anything so I had to replace it. However, it will often give an extra lease of life to a tired battery. As you say, there's not much you can do about a dead cell. All of the batteries I have bought in recent years have been maintenance free and I haven't needed to add any distilled water. Considering how cheap it was, I have been very impressed.
Well this more on preventive maintenance.. Just plan for twice a year for pulse repair.. there is no other way to stop the chemical reaction.. Monthly or every two months battery health check will be good.. The problem is when temperature or climate that inffluent the chemical reaction..
SOH definetly will affect the SOC.. Desulphate regularly is a maintanane part that you need to think of... (like changing engine oil once a year or twice a year)
Pulse repair is not repair.. it is a preventive maintenance...!!!
Plan check together with your car tyre pressure, thread depth, cooling fluid level, brakes, etc in your monthly basis car check.. decide to do something when you find out it is out of range such tyre pressure etc
With SOH of 100% you will expect your car batteri could hold voltage of 12.9 without problem or dropped. Low SOH% cause battery could not hold the voltage. And always drop and not have enough CCA to crank your engine
My car was repair in workshop for a month (overhaul) and in the painting worshop for another 3 weeks..and unfortunely with pandemic the car rarely drove. So the SOH dropped to 47%. My car battery is a chinesse battery.. Worth to try.. yes 11 days it just back to SOH 100%.. the battery was 2 years old by the way.
For another two cars battery that i got are japanese Yuasa battery.. not much problem to desulphate
I have 3 cars so really need tools to simply maintain the batteries
When reach 90% SOH- pulse repair.. so that you will get shorter recovery time..otherwise need to buy higher amp rate charger to suit your battery slow charging/ pulse repair time
The good with slow pulse repair/ charger..it will not fried or dry your battery..so free maintenance battery like mine is a welcome to desulphate
@@shahnasramli Thanks for all your advice. I agree. Doing a pulse repair twice a year is good preventive maintenance. I bought the charger last year as a result of what going on with this virus. My kids started studying on-line and I was at home all the time. I don't like driving in Thailand because the driving standards are so atrocious, so it was a good excuse not to drive. However, when I did eventually decide to use the car the battery was completely dead. The charger restored the battery and I have used it since to desulfate batteries.
Excellent video, well delivered, straight to the point and a documented test. I’ve got one of the foxsur chargers and it failed to repair a battery with a dead cell, which is understandable. But I now have a another bad battery that is 18 years old so hoping this can be recovered
Thanks! Repairing dead cells is beyond its capability, but if the plates are just sulfated it can help. It will be interesting to see how it performs with that old battery.
There a good battery charger and to recondition your battery i use them for my solar batterys when I want them reconditioned had batterys for 8 years now still strong useing pulse repair
That's a great endorsement, thanks!
Thanks for the information ♥ ️ I have a problem with this charger and I lack experience. Can you help? ♥ ️ ♥ I put maintenance and the operation was successful, but the problem The battery is empty of charge 0/100 and despite long hours in this charger does not exceed 20/100 what is the solution⛔⛔
I'm afraid I don't know. Perhaps the battery is beyond repair? How old is it?
my exact foxsur pulse battery charger version 7.0 did a repair mode and it switched to charging mode after 24 hours. Let's see how my 2.5 year old battery behaves now. I don't have the analyser though, i can only test it the old method way.
The repairs I have done have also taken 24+ hours. It isn't fast! However ... according to my analyzer and real world use it does a good job. Batteries don't tend to last very long where I am because of the year-round high temperature. I would normally be expecting to change my current battery around now, but it's still going strong. When it starts to get weak I will try another pulse repair. Thanks for your comment!
@@PhilUKNet I guess it works for you. I just did a 15 minute stress load test by leaving my headlights on without the engine on. Since my car is the modern type, the whole dashboard has to be turn on while powering up the headlights but without the engine turned on. I guess this may drain slightly more power than intended. It kind of failed the stress test and the engine can't be turned on right after the test. The battery was drained from 12.6v to under 11v just within 15 minutes. Took out the battery and it stands at 11.4v to 11.5v after resting it for about 5 minutes. Will wait for another hour or so to see if the voltage goes back up before another round of pulse repair.
@@170709593 Thanks for the info.
Any update on the CCA?
I've been using my car very little because of the lockdown - maybe once or twice a week - but I just checked and the CCA is 455. It's lower than usual, but OK. It starts every time without any hesitation. My battery analyzer says the battery is still good, but suggests recharging. This is probably as a result of not using the car much. In another post someone suggested doing a pulse/repair every six months as preventive maintenance. The last time I did one was more than six months ago, so this probably isn't a bad idea.
Does it has to plugged in to switch?
Not sure what you mean. If you can explain more I will try to answer.
Should I do a repair or charge on a dead car battery that hasn't been used in months?
I'm not exactly sure, but this is my thinking. Charge mode just charges, whereas repair mode repairs *and* charges. My first inclination would be to use repair mode and just leave it for a long time - my experience has shown it needs in excess of 24 hours. On the other hand, if the battery is completely dead, it may possibly respond better to a repair if you charge it in regular charge mode beforehand. Whatever you do, I don't think it will hurt the battery, but my preference would be to repair. If you have time, let me know what happens. I'd be interested.
In the case of a dead, unused battery, it is recommended to try charging with a small current first. Therefore, the best way to start is to use a pulse mode, which also causes desulphurization. However, you have to reckon with the fact that it will take a long time and an attempt to save the battery may fail.
@@Tab7.6.Tab7.6 Good info. Thanks.
I’ve got one of these on my deep cycle 225ah battery at the moment. I wonder how many weeks it’ll take lol
That's a huge battery! Hopefully, days rather than weeks, but quite a long time I would imagine.
It’s still going lol
is it still holding up after some time?
I tested it with the battery analyzer last week and it's still in good shape.
Can the repair mode be used while the battery is installed on the vehicle?
repair mode has a pulsed current curve, will it damage the vehicle electronic control unit(ecu) etc.?
what are your ideas? thanks
Good question and I had exactly the same question! The user manual does not state explicitly whether you can or cannot leave the battery connected while doing a pulse repair. When I have done normal charges I have left the battery connected. However, when I did a pulse/repair I (like you) was concerned that the pulsed current could damage the ECU, etc. I therefore disconnected the battery while doing the pulse repair just to be on the safe side. So, I can't really answer your question. It may be OK, or it may not be OK. If you are concerned that it could do some damage, as I was, just disconnect the battery for some added peace of mind. It only takes a few minutes extra to disconnect and reconnect the battery. I'm quite a cautious person and if I do anything where there is a risk I like to try to mitigate the risk.
@@PhilUKNet Thank you. I am thinking of removing the battery and then charging it. But does the repair mode really work?
I have a non-working efb battery for almost 4 months and I do not know its condition. I guess it needs to be desulphed. I wonder if this device can do that? Firstly, I think to keep it in repair mode for 1 day and then slowly charge it one more in motorcycle mode.
What do you say, how should I follow?
@@alibaba-qn3qv I also have a Foxsur battery analyzer and I saw a big improvement with the CCA reading after doing a pulse repair. If the problem is just sulfation it works, but obviously it can't fix battery defects. It takes a long time - 24 hours plus. Allow yourself a lot of time, just put the charger into pulse repair mode and leave it. When it has finished repairing it will go into regular charging mode automatically. The manual advises charging for another hour once it is repaired, but if longer don't worry because the charger won't overcharge. It may take the best part of a weekend. If the battery isn't sealed, top it up with distilled water before you begin.
@@PhilUKNet As you mentioned, it worked. Foxcur is not written on the product that I have supplied, but it is made in China. Generally, all of them are contract manufacturing and their names change.
The top covers of the battery do not open, it is maintenance-free and sold as completely maintenance-free batteries in my country, I guess I cannot add pure water because when removing the top cover to add water, it may be damaged and the cover may become unusable.
So, for now I will try to solve the sulfates in the battery by using only the repair mode. Then I will wait and try to charge it once more, actually it may be useful to do a full charge and discharge once.
@@alibaba-qn3qv Yes, these devices are sold with various brand names. Your plan sounds good, let me know how it goes!
will battery be 100%full in pulse mode sir?
When I did a repair on my own battery it wasn't quite 100%, but it was close. I should also mention that it hadn't finished the repair. When it finishes it should switch to regular charge mode, but it had already been repairing for 26 hours and I didn't want to wait any longer so I stopped it before it had completed. Had I waited, it may possibly have gone to 100%.
I'm actually doing a pulse repair at the moment on the battery in my wife's car. The CCA is 310 and when I checked yesterday with the Foxsur battery analyser the CCA was just 198. It told me the battery was bad and to replace it. I started a pulse repair with the Foxsur charger, but it hasn't finished yet. It has been going for about 18 hours now. When it's finished I will check again with the battery analyser and I can let you know what happens.
So, to summarise with my experience so far, not quite 100% but close.
@@PhilUKNet thanks sir, i pulse mine for 48hours and it still blink all from 20-100%,, not like when i charge it, only blink the part that need to charge,
@@robbyyoung4260 Same here. It's now been going for 24 hours and all the bars are blinking. My wife will want to use the car soon and I will have to stop it before it completes. However, I am sure that after 24 hours there will be a big improvement. The device works well, but it takes so long.
Here's an update and the answer to your question really depends on the condition of the battery. When I did a repair on my 620 CCA battery it was almost back to 100%. When I checked my wife's 310 CCA battery yesterday it read 198 CCA. I've just completed a 25 hour pulse repair and the charger told me it was successful and that the battery was full. However, when I analyzed it the analyzer told me it was 200 CCA, still bad and needs replacing.
Therefore, it looks as if the problem with this battery is more serious than just sulfation. If a battery is sulfated the charger can help, but if it is old with other problems the charger can't perform miracles. The battery in my wife's car is now fully charged, but the CCA is low and I suspect it will need to be replaced soon.
@@PhilUKNet thanks sir,maybe mine included in the un miracle one🤣, for safety,i think,ibetter replace it with an new one,
I have one too but there is one thing that bothers me very much about it.Its the fact that the clamps spark when you connect and disconnect the battery,it doesn't matter if the main is unplugged it's still going to spark because it draws power to give battery voltage information.I don't like that sparking around a fully charged battery with a hydrogen-oxygen mix coming out of it
I sometimes see a little spark when connecting my battery terminals. There's a lot of current involved with car batteries and I don't think it's an issue.
@@PhilUKNet it doesn't take anything more than a spark for the hydrogen to explode
Im sold.
It doesn't perform miracles, but as a basic charger it works well and the pulse repair mode can improve things if your battery is sulfated. Where I live in Thailand they're being sold for as low as 190 Baht - less than 6 USD - so you can't really go wrong.
okay, you convinced me in getting one haha
They're cheap and there's a good chance the pulse/repair function might extend the life of your battery. Hope it works out for you.
you should not charge or use the repair mode with the car battery cables attached to the battery unhook the neg cable from the battery then charge or use the repair mode You do not want to send High Voltage Pulses back to the car ECM & BCM modules !
I certainly agree about the pulse/repair mode and remove the cables every time. I have done regular charges with the cables connected and not had any problems, although I agree it would lower the risk of any potential problems.
Is it still ok?
I haven't used it for a few months, but last time I used it, it was fine.
Since you didnt let it finish, I wonder if it would have gotten back to 100% if you let it go.
Maybe! It went to over 24 hours and I got a bit impatient waiting. When you do the repair function you should wait until the repair finishes completely and it changes to a normal charge. I will be doing another one in the future and I'll make an attempt to let it finish properly!
With a used (2 - 3 years) battery it is not possible to achieve 100% efficiency again. Foxsur charger will not make the active mass return to the plates. But it will certainly improve the condition and give better results than a regular charger. I can confirm Phil's experiments, the effects in pulse mode are very positive.
@@Tab7.6.Tab7.6 So I pulse charged mine over the holiday weekend. Checked on it every once in a while. Started at 62% efficiency. Once it hit 85% it wouldn’t improve any more. So at least I don’t have to replace it. But was really hoping for 90%. Either way, the $25 charger saved me from having to buy a $170 battery.
@@JohnHuthmaker I think you have achieved a very good result. It is important to remember that the battery undergoes natural degradation due to corrosion of the plates. In addition, there are other things, such as sulphation. To get a more accurate result you would have to leave the battery alone for 48 hours after charging. During this time, the resting voltage will drop and the electrolyte density will increase. But this is not always possible due to lack of time.
@@Tab7.6.Tab7.6 interesting. I’ll plan to do that next week. I should have some days that I don’t need to use the car.
How do you know a normal charge didn’t just fix it?
Perhaps it would have done. Really, you would need to do a controlled test with two identical batteries in identical condition to see what difference it makes. Unfortunately, I'm not in a position to carry out such testing.
Normal charging in most cases independently of the charger allows you to get about 80% of the battery capacity. The use of the pulse mode, in addition to the positive desulphation effect, also gives the battery an advantageous absorption phase with increased voltage. Such charging should be applied at minimum twice a year, at least before and after the winter season, when the battery has difficult working conditions due to lower temperatures.
@@Tab7.6.Tab7.6 Thanks again. Based on your recommendation, I need to give my battery another treatment soon.
@@PhilUKNet The next good thing about this charger is that it really turns off after 24 hours in pulse mode and switches to float mode. If necessary (for batteries with a capacity of more than 60Ah) this mode can be easily switched on again. In contrast, the Foxsur 8A version has a bug. Even if it shows on the display FUL after PUL mode, it does not go into maintenance mode. This is not good if we forget to switch off the charger, because the phase of the increased voltage will last too long and may occur electrolyte loss due to electrolysis. Fortunately, in version 5A there is no such fault.
@@Tab7.6.Tab7.6 For what it costs, it offers remarkable value. I know that people in Europe are paying a lot - someone in Ireland told me he paid around 28 UKP - but mine cost the equivalent of 6 UKP in Thailand. I know it's cheap, but your comments have confirmed that it also works very well.
Just a hint, you should have chosen when tester ask you if battery is charged "NO" because it was depleted my man..
No, it wasn't.
Hi Phil. This is the perfect review of the pulse repair mode on these Foxsur chargers. Thanks for taking the time to put it together. It is the kind of thorough review I wish I had done. I have been using a similar charger called Enusic, but it is the same as Foxsur. I made a video showing the output of the charger on an oscilloscope when in Pulse repair mode. This charger has added new life to my old batteries. It will not bring a severely damaged battery back to life, but it will greatly improve a sulfated battery.
Here is what the pulses look like from the Enusic/Foxsur charger I have...
ruclips.net/video/TLdoGV_QEuY/видео.html
Hi George, your one looks very similar. I imagine they are all made at the same battery and sold with different brands. I'm not sure if it was your video, but I did look at a video previously that showed the pulsed output on an oscilloscope. I got quite annoyed with another video that stated categorically that charge pulsing doesn't work. It does. As you say, you can't do much with a damaged battery but it does help with sulfated batteries. Thanks for your comment and link.
Can take over a week
It's never taken me that long! Typically, it's been around 27/28 hours to do a pulse repair. A long time, but not a week!
when u know the russians are doing it. it should make alot of sense cause russians are always short of money to buy brand new stuff instead they figure out how to repair stuff and make it work the easy way.
There's a lot to be said for that. It's similar in Thailand, where I live. A lot of things are repaired that would normally be thrown away in Western countries. This includes cars. My wife's brother owns a car body shop and I can't believe some of the wrecks that he repairs. In the West these would be automatic write-offs, but not in Thailand. I like it. Products aren't designed to be repaired these days and I hate having to throw something away that has a small problem. There are small shops here where you can get things repaired, which is great!