The almighty opus i like the fact it not only tells u whats actually happening with your charging cells but it also has the discharge refresh feature which is very rare in a charger
For all the readers wanting to know if you can fit 21700 in the BT-C3100 V2.2. YES, YOU CAN! I already did charging and discharging of about 100 cells - 21700 and so far all good.
Here are a few of my additional comments on this excellent charger, for which OPUS did so many things right: 1) OPUS makes a single-channel version of this same charger, the BT-C100, but in addition to all the same features, it also adds an optional USB input and a USB output so you can use it as a power bank if you have a lithium cell installed: 2) Both of these chargers use 12vdc inputs with 'proper' DC barrel connectors - this is mandatory in my opinion but not all vendors do this. One of the benefits is you can power this from a 12v solar bank as well as vehicles. 3) This review points out the display is backlit, another mandatory feature in my view. The OPUS displays are among the most readable LCD displays you will ever see - simply bee-u-ti-ful.
Thank you very much for your video. This charger really helped me with salvaging the 18650 batteries from dead notebook battery packs. I managed to get the bad cells separated from the good ones, get the accurate capacity and test the voltage of each battery. I bought this charger last week when I was watching your video and I managed to salvage 103 good 18650 batteries and now I can add those to my EDC kit. One thing what I don't like, is that it doesn't work via USB but I can still use my diy Lithium-Ion 18650 charger for charging my batteries on the go and the Opus for charging everything at home.
their is a switch on the in side on the right hand side when its up side down looks like it changes the voltage 4.2 4.32 and 3.7 volt is labeled on the board
I like the new format of the tabletop review. Good job! If you're looking for feedback the overhead camera was a little shakey. Not sure if it was the table or camera moving but it was bouncing for all of the closeup video.
the max charge current of the charger is not 3A. the power supply is 3A but that's at 12v. you're only charging at max 4.2v so realistically the charger could deliver over 8A and still pull less than 3 from the PS. also the NIMH batteries aren't charged at those voltages. 1.2V is the nominal voltage. they're charged when to display is ~1.5-~1.6
@@practicalguy973 Peak detect (Delta V) chargers for Nickel chemistry are not concerned with exact voltages. That is why you can charge any number of series cells without explicitly limiting to a particular cell count (total voltage). Peak detect chargers look for a characteristic peak in internal resistance of the cells while being charged to determine when they are fully charged. Battery internal resistance changes over it's cycle life, and so can the fully charged voltage coming off the charger.
I gave your video a thumbs up. There was however one thing that you forgot to add, which is, the faster you charge the battery the quicker you degrade the battery as well. What this means is that you should only fast charge a battery IF YOU REALLY NEED IT IN A HURRY!. Otherwise you should charge the battery at 500 mA.
Michael Nager that's not true. Slower is not always better. Manufacturers of li-ion suggest a charge rate of .7C so the ideal charge rate is dependent on the capacity of the battery. Too slow can actually be more damaging than too fast as it can cause terminations to be missed along with other problems. (Edit: within reason of faster charging. I'm talking about reasonably high charge rates and not something like charging a 10440 at 2amps) If you doubt my information you can go directly to Panasonic's lithium ion website and find the information readily. Research before passing on false information.
***** Love it when someone tells me to " do the research" because it usually means the person hasn't bothered their arse to do any research of their own. Chargers work on the principle of CC/CV (if you don't know what that is then I would suggest you do the research). When we are talking about fast charging essentially we are talking about how long it takes the battery to reach 4.2 volts and this is done at CC. The problem with this is that when the battery is reading at 4.2 volts it has not reached its full potential (or capacity) and the charging regime changes to CV, which is a charge at a much lower current The faster you charge the battery during the CC phase the less of its capacity is filled before it reads 4.2 volts and the sooner it changes to CV mode to charge the battery to it's full capacity. Fast charging a battery which is below a certain threshold of around 20% of its capacity can damage it, and the fast charge is only really good for getting you from around 25% of the capacity to 70%. If the fast charger does not have a CV component to its charging regimen then the battery will be deemed "full" at a capacity far short of the battery's potential. Charging a battery at a lower current will get you to a completely fully charged battery state faster because it will only go into CV mode a lot later in its charge cycle when the battery capacity is well over 90% full. The damage which can be done to batteries is when the charger falsely reads the charge state of the battery and then the current used is converted into heat in the battery instead of used to create a charge and this will damage the battery. Trying to fast charge a battery below a certain threshold will damage it, trying to fast charge a battery above a certain threshold will damage it. A GOOD battery charger will NEVER attempt to charge a battery exclusively at CC no matter what value of "C" you set for the charge. Next time you might want to read a sentence or two more before you tell someone to "do the reasearch" and make a complete ass of yourself.
Michael Nager you're talking like you have total control of the current and voltage on these standard chargers. No, they're mostly automated and what I said stands about choosing too low of a charging current is still worse than choosing one a little on the high side as long as you're within a certain range. And it seems you don't know what C was referring to when I said it earlier. If you're arguing directly against what the manufacturers of the battery state on top of much research and suggestion of people far more experienced on the subject than you or I then there's no sense in I continuing the conversation. Good day.
thanks Laura, lots of changes to make still but getting there . it works well for these types of videos. i will of course be outdoors for the majority of products but good to have a home base people recognize.
I've started using an external 12v from my unused Wi-Fi router and my i4 STILL gets pretty hot. Not AS hot, so anyone using them I definitely recommend using the 12v input with a seperate converter. But I'm probably still going to be adding a fan, soon as I decide how I want to mount it. Haven't solved that with one fan yet, since I'd like to also have it throw a little on the batteries as well, and not suck air (and dust) in. And eventually I will be getting a better charger, that tells me more than basically its just charged or not.
I am going to buy a Energizer charger that comes with 4 AA NiMH 1300mAh Rechargeable batteries, will this charger also be able to charge my other 4 NiMH AA batteries that are 2800mAh, 1300mAh to 2800mAh is a big increase.
I am looking to buy a charger to mainly charge AA & AAA batteries, I often see the Duracell and Energizer chargers, $50 is the maximum I want to spend on a charger, also is it better to buy a charger without a fan, are the Duracell, Energizer and Uniross chargers better than Opus and are Amazon Rechargeable batteries the best and are they made by Panasonic but what charger should I buy, I want my batteries charged within 2 hours or faster.
AA and AAA should be charged slow or they can be damaged. The opus can charge pretty much any battery which the energizer and Duracell can not. It is a much more advanced charger.
7:14 if your 18650 does not get to 4.2 its dead right? I think he doesn't know that 'charge' is not the V but the amount of Amps it can gen every hour. 8:08 its not the Amps of the battery its the amps you put in.
Hello... this charger - tester from what I have seen is very old, if mention is made of the most recent version 2.2 but it is still many years old. Is there any other more modern and better charger - tester?
Thanks for your Review! it got really good, but im just want to throw in the best Batterycharger is the Skyrc MC 3000 hope you doing an Review from that one too :)
I like this charger very much, but dunno whether it´s the best one. The cooling fan is a bit annyoing and I have concerns about the longevity of a small fan with high rpms. It also is a bit confusing this fan will also work if I charge 4x AAA with 300mA, I don´t think it´s necessary. And I still don´t find the homepage of Opus so far, didn´t exist?
3.7v is the _nominal_ voltage for a LiPo (Lithium Polymer) cell. Max is 4.2, min is ~3.0. Max and min values will vary depending on cell chemistry and manufacturer, but those above are the generally accepted limits for LiPo.
Hi, bought a Nitecore intellicharger i2 and chargered some batteries with no problem. I bought a TRUNITE TC2 v2 and came in the mail today and put the battery that came with it in the Nitecore and after awhile I started to smell hot plastic. Checked the charger and it was getting pretty warm and smelled like hot plastic. Shut it down and nupluged it.. Afraid to use it . Any idea what to do?
I just bought 2 brand new BT-3100. The (quick test) internal resistance reading is different from my other separate digital internal resistance tester. Is the interal resistance accurate on the OPUS? I trust my other digital internal resistance tester.
Hello there. at my first charge i open the opus put 4 18650 bat., push nothing button and start to charge at 500mah for 3.5 hours. after i see time goes 0 and start charge again. i put off the battieries. i read at manual that when charge fulls then opus start a new tickle charge to give 10ma more. i check my battieries and all full but didnt let complete the tickle charge. is this right? opus should stop charge when is full automatic? Also my battieres are 3000mah . the opus should write 3000mah when charge is full or use another scale ( i see it cant write 4 digits, so it will say 300mah?) Thx and sry for my english :D
This is SO timely Ben! I'm looking to upgrade my charger systems right now. Does this one have an automatic individual shut-off when cells are charged?
Not bad! Not quite what I'm looking for (need something that'll do rechargeable D's) but I may still pick this one up to replace my old BC-900 that only does AA/AAA's--It works well for what it is, but having to set the modes within x seconds of powering up is a pain.
once the batteries/batteries are fully charged do you get a final reading of what their capacity really is? Maybe times batteries claimed to be a certain mAh but end up being way lower than advertised.
mAh is usually lower so I base if off of volts instead. those 18650's i had in there in the video got done a short time later and they were all at 4.2 volts. If I check the mAh it will be lower than whatever the battery is because the counter in the charger doesn't start at zero unless you discharge fully first. so that is the only way to get a more accurate number and since you don't have to fully discharge li-ion i never worry about mAh just the voltage.
Out of curiosity, what makes the Opus BT-3100 better than other chargers like the Xtar VC4? I owned and used a Nitecore i4 mk1 from 2012-2017, often daily, and it worked great until I tried to 'modify' it to make it charge my LG V10 phone battery, which involved soldering wires onto - & + terminals on 2 bays, which worked for a year, but it died afterwards. The only downside to the i4, was the lack of an LCD screen that shows useful info, like voltage, amount of charge in mAh. Now I've got an Xtar VC4 that I've been using for 21 months without issue. But I've read quite a few peoples' posts at candlepowerforums, who say the Opus BT-3100 is the standard. Recently ive noticed the Xtar VP4 Dragon, but don't know much about it.
Most people prefer to charge quickly and that can cause extra heat and more damage to the battery if the charger misses termination. The Panasonic BQCC17 is a slower charger but has most optimum charge current for AA and AAA. I think all the chargers in those articles are decent except for the CC55 which can be damaging as you will see. Also if you have money to burn a professional choice for a lot of photographers for an 8 bay AA/AAA nimh charger is the Maha mhc808m.
I just want to see the true mAh of a battery, as often you've seen some 18650 batteries on Ebay showing 3000, 4000 mAh while the brand name batteries only show 2400 +/-. Can this charger show me the true mAH after a battery is fully charged? Also, you mentioned a coupon code to purchase this charger, what is it?
Liem Nguyen Yes, the charger will display a battery's capacity, however, it will fully charge a battery, discharge it, and charge it full again, in order to do so accurately. It is the time it takes to discharge the battery in combination with the discharge current that is used to determine the battery's capacity. Apparently, measuring the time to charge a battery at a set current is less accurate to determine a battery's capacity, as there are losses involved.
I've bought 4 or 5 NITECORE Digichargers, winding up giving many to friends. Then, after 9.5 months, mine died after using it daily. I liked the NITECORE because it could accomodate 18650s amd even 36650s. QUESTION: do You feel it is better to leave these units on all the day long rather than just plugging it in only when You need it? Thanks, John
thanks man. Yeah, that's what I did, and after 8 months, zap, no more. I have a friend who leaves his constantly plugged in, and his is still alive. Just wondered if You had thoughts on that.
i havn't had great luck with these chargers 1st one had bad port would only charge at 50mah Second unit first port again needs battery to be in a VERY specific spot to detect and charge Fan is very loud should use a larger slower fan on the bottom of the unit instead of tiny sonic speed fan on side
Hi ..please question i want best battery charger .. i found la Crosse Technology charger and people recommend it. but ! i read the reviews at amazon about ( la Crosse Technology charger ) maybe many of the issue that face people with this charger .. that it won't work for too long time or some things won't work like mode button... i mean short life ..some of them after 1 year some of them more or maybe less ? is this true ? because i want good charger .. but i don't want it to dead in few months or few years.
its a great charger. it has a 3 amp input but the only mistake in the review is it outputs 4 amps. like you showed 4 batteries times one amp. input is always lower then output. look at a wall wart charger. it amplifies it. .2 amp cell phonr charger can put out near a amp
Guys can I use a phone charger to plug it into the battery charger ? I have the one from SOAIY? Or do I have to use the usb cable and charge it from my laptop?
I'm finding it hard to find a charger that will charge 18650 and 20700 and those are the two batteries I use the most this charger your reviewing right now on its cover does not show that it will charge the 20700 battery. So does that mean it'll charge it but it's not listed or it won't charge it at all? I had to drop down and buy the B 0-4 battery charger because it did both. Where I would have liked to have had one that individualized the statistics on the battery the testing and everything like the one you're doing. But it's hard to find one that does both types of batteries.
Jimmy Clark I have the opus by 3100 had for about a year maybe a bit less max is 21700. Its not to tight even with the golisi 21700 s I like the charger not sure of my version but no no matter what rarely will it charge to a full 4.2 no matter the battery mah or how many changing from 500 to 1000 mah. Doesn't help either. So when my tests are done on battery capacity volts reached are 4.17 to 4.18 I toss them on my d4 Nicore to finish to 4.2 volts nitecore d4 21700 s charge but its to tight to my liking.
Jonas Pärsson Yes, with the charge-test mode. In this mode the battery will be charged full, then discharged, then fully charged again. The time it takes to discharge at a defined current determines the total mAh, ie. the battery's capacity; that number will be displayed.
Should i buy the opus 3100 or 3400,what is the difference & is your 3100 2.2 still working good? Thanks! I heard of some problems with the power supply shorting when discharge/charge cycle.Something about opus going with a cheaper POWER supply distributor now.Heard this in a forum but it only does it when discharge/charge cycle with 4 batteries at the same time.THANKS for any info that can help me out.
Call me a nerd but I need just small batteries charged good fast and need it to work great for a long time for controllers what type do you recommend if my range is 1$-100$
this is the fastest of this type of charger I have used. i know for like RC they have chargers that are quick charge but not sure what types of batteries are best for those. check out candlepower forums they have all sorts of "nerdy" info lol.
I have the Goal Zero. Only problem is the proprietary USB cord and it won't charge my 18650's. The way things are progressing so fast I'm sure we will have it all soon.
Yes, look at the SoShine. I can take both 12v and USB input and they have a 1, 2, and 4 channel version. But, it isn't quite as nice as the OPUS and its discharge/cap test isn't as good - basically it only shows you mah input, rather than output. And its not as high a current. In short, the OPUS is the very best charger out there for the money. If you are willing to spent over $100 then there are a bunch of options. And why do you really need USB? Most solar banks are 12v and the OPUS takes 12v input. And if you REALLY need USB input, you can get external adapters that readily convert USB to 12v (boost converters) - I have several. This is what an 18650 power bank does - it boosts 3.7v lithium up to USB 5v, so its the same concept.
I'm an American living in the Philippines. We have everything from political instability, typhoons, volcanoes,earth quakes and tsunamis. I try to be bomb proof when it comes to extended brown outs.
Please do not charge lithium battery’s at more than 1/2 of their total capacity mah in mah or amps (mah /1000) charging a regular Samsung 25r (2500mah or 2.5 amp) battery at 2 amps will greatly reduce battery life and more likely cause the battery to catch fire and as they’re lithium these battery’s can only be extinguished by type d extinguishers (water is like petrol when they’re on fire) I know I may seem like a paranoid nut but since I’m into drones and rc cars with huge lithium battery’s I’ve seen what these things do when abused like in this video please stay safe
Can any one please tell me does fake Opus-BT-C3100 clones exist as I am ordering 2 from ebay. Cannot fine anyware comparison about fake Opus-BT-C3100 clones.
Crappy review. The only reference you made to checking the battery capacity was to say "you can use quick test and get some statistics". You obviously don't understand this, so you bang on non-stop about the only thing you do understand : charging currents.
I've been wondering what you guys do for charging all your batteries, I have a decent Nitecore charger but it's not nearly as good as all the bells and whistles this one has plus I don't have that many high powered lights yet (=5) just got Olight S1A and love it!
Great overview. I'm going to buy one now! I had a cheaper one that I bought and I accidentally put the batteries in backward and the charger no longer works. It seems it would have some sort of a 'fail-safe', but I suppose not.
Be careful ordering LiitoKala today via Amazon. They use shady shipping practices on Amazon. My order was delay and never reflected an actual ship date via Amazon tracking. Amazon advised me it was shipped but interestingly the item went unavailable the next day on Amazon. I tried to post a one-star review and Amazon filtered it out. Amazon's review are now discredited. After several missed delivery dates and days of delayed time I ultimately asked for a refund and ordered another charger/discharger. By LiitoKala at your own risk.
hi,MiBoxer gives us licese to sell his new c4 4-bay fast charger. In order to celebrate Black Friday. Here is a link of 10% off promotion. You and your family or friends may need it www.amazon.com/promocode/APZGEH5F3XG4F
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The almighty opus i like the fact it not only tells u whats actually happening with your charging cells but it also has the discharge refresh feature which is very rare in a charger
Way to step up the production set, great set-up, Im taking notes, great charger as well -CP
thanks CP
For all the readers wanting to know if you can fit 21700 in the BT-C3100 V2.2. YES, YOU CAN! I already did charging and discharging of about 100 cells - 21700 and so far all good.
But not the protected one.
Here are a few of my additional comments on this excellent charger, for which OPUS did so many things right:
1) OPUS makes a single-channel version of this same charger, the BT-C100, but in addition to all the same features, it also adds an optional USB input and a USB output so you can use it as a power bank if you have a lithium cell installed:
2) Both of these chargers use 12vdc inputs with 'proper' DC barrel connectors - this is mandatory in my opinion but not all vendors do this. One of the benefits is you can power this from a 12v solar bank as well as vehicles.
3) This review points out the display is backlit, another mandatory feature in my view. The OPUS displays are among the most readable LCD displays you will ever see - simply bee-u-ti-ful.
thanks Keith. I agree on the backlight.
I think I'm sold on this, simple and does probably every battery I'm ever going to use
Thank you very much for your video.
This charger really helped me with salvaging the 18650 batteries from dead notebook battery packs.
I managed to get the bad cells separated from the good ones, get the accurate capacity and test the voltage of each battery.
I bought this charger last week when I was watching your video and I managed to salvage 103 good 18650 batteries and now I can add those to my EDC kit.
One thing what I don't like, is that it doesn't work via USB but I can still use my diy Lithium-Ion 18650 charger for charging my batteries on the go and the Opus for charging everything at home.
their is a switch on the in side on the right hand side when its up side down looks like it changes the voltage 4.2 4.32 and 3.7 volt is labeled on the board
I like the new format of the tabletop review. Good job! If you're looking for feedback the overhead camera was a little shakey. Not sure if it was the table or camera moving but it was bouncing for all of the closeup video.
yep, still working on it ;)
the max charge current of the charger is not 3A. the power supply is 3A but that's at 12v. you're only charging at max 4.2v so realistically the charger could deliver over 8A and still pull less than 3 from the PS. also the NIMH batteries aren't charged at those voltages. 1.2V is the nominal voltage. they're charged when to display is ~1.5-~1.6
1.5v is overcharging and damaging to a nimh aa or aaa. 1.45v should be max full off the charger.
@@practicalguy973 Peak detect (Delta V) chargers for Nickel chemistry are not concerned with exact voltages. That is why you can charge any number of series cells without explicitly limiting to a particular cell count (total voltage). Peak detect chargers look for a characteristic peak in internal resistance of the cells while being charged to determine when they are fully charged. Battery internal resistance changes over it's cycle life, and so can the fully charged voltage coming off the charger.
Yes, volts can be traded for amps with a buck-boost converter type circuit - which is utilized in all smart chargers.
Glad i found your channel been looking for charger and battery source
Sorry for the shakes!
nice revieuw,can I test the true capacity of a brand new 18650 battery with this charger?
It's pretty cheap here - for 30.99 USD
gearbest.com/chargers/pp_174044.html?wid=21&lkid=10329996
Sweet
ruclips.net/video/a_RWJyp-LdA/видео.html
Man how the most fast charger for battery 18650 sir?
Ya you should be sorry
New video set-up looks great Ben!!
thank you! still working out some kinks.
I gave your video a thumbs up.
There was however one thing that you forgot to add, which is, the faster you charge the battery the quicker you degrade the battery as well.
What this means is that you should only fast charge a battery IF YOU REALLY NEED IT IN A HURRY!. Otherwise you should charge the battery at 500 mA.
i'm always in a hurry.
Michael Nager that's not true. Slower is not always better. Manufacturers of li-ion suggest a charge rate of .7C so the ideal charge rate is dependent on the capacity of the battery. Too slow can actually be more damaging than too fast as it can cause terminations to be missed along with other problems. (Edit: within reason of faster charging. I'm talking about reasonably high charge rates and not something like charging a 10440 at 2amps)
If you doubt my information you can go directly to Panasonic's lithium ion website and find the information readily. Research before passing on false information.
*****
Love it when someone tells me to " do the research" because it usually means the person hasn't bothered their arse to do any research of their own.
Chargers work on the principle of CC/CV (if you don't know what that is then I would suggest you do the research).
When we are talking about fast charging essentially we are talking about how long it takes the battery to reach 4.2 volts and this is done at CC.
The problem with this is that when the battery is reading at 4.2 volts it has not reached its full potential (or capacity) and the charging regime changes to CV, which is a charge at a much lower current
The faster you charge the battery during the CC phase the less of its capacity is filled before it reads 4.2 volts and the sooner it changes to CV mode to charge the battery to it's full capacity.
Fast charging a battery which is below a certain threshold of around 20% of its capacity can damage it, and the fast charge is only really good for getting you from around 25% of the capacity to 70%.
If the fast charger does not have a CV component to its charging regimen then the battery will be deemed "full" at a capacity far short of the battery's potential.
Charging a battery at a lower current will get you to a completely fully charged battery state faster because it will only go into CV mode a lot later in its charge cycle when the battery capacity is well over 90% full.
The damage which can be done to batteries is when the charger falsely reads the charge state of the battery and then the current used is converted into heat in the battery instead of used to create a charge and this will damage the battery.
Trying to fast charge a battery below a certain threshold will damage it, trying to fast charge a battery above a certain threshold will damage it.
A GOOD battery charger will NEVER attempt to charge a battery exclusively at CC no matter what value of "C" you set for the charge.
Next time you might want to read a sentence or two more before you tell someone to "do the reasearch" and make a complete ass of yourself.
Michael Nager you're talking like you have total control of the current and voltage on these standard chargers. No, they're mostly automated and what I said stands about choosing too low of a charging current is still worse than choosing one a little on the high side as long as you're within a certain range. And it seems you don't know what C was referring to when I said it earlier.
If you're arguing directly against what the manufacturers of the battery state on top of much research and suggestion of people far more experienced on the subject than you or I then there's no sense in I continuing the conversation. Good day.
*****
Which part of "A GOOD battery charger" did you not understand?
Is there a batterie charger that charges four 18650/20700 at the same time at 2A and till 4.2V?
Really professional looking video setup, Ben. Nice.
thanks Laura, lots of changes to make still but getting there . it works well for these types of videos. i will of course be outdoors for the majority of products but good to have a home base people recognize.
you might have forgotten to mention that there's an internal switch for charging Lifepo4 batteries
Nice looking charger, the fan is a great idea, NiteCore should learn from this because their i4 charger runs so fuxkin hot! !!!!
I've started using an external 12v from my unused Wi-Fi router and my i4 STILL gets pretty hot. Not AS hot, so anyone using them I definitely recommend using the 12v input with a seperate converter. But I'm probably still going to be adding a fan, soon as I decide how I want to mount it. Haven't solved that with one fan yet, since I'd like to also have it throw a little on the batteries as well, and not suck air (and dust) in. And eventually I will be getting a better charger, that tells me more than basically its just charged or not.
I've been great, Happy you are also doing well.....good video
Can I charge batteries directly without changing the settings?
Another great video. I ordered one. Thanks.
Geeeze, sure hope it comes with a 500 page manual and a 3 hour CD to learn how to use it!
And a 2 day course
I am going to buy a Energizer charger that comes with 4 AA NiMH 1300mAh Rechargeable batteries, will this charger also be able to charge my other 4 NiMH AA batteries that are 2800mAh, 1300mAh to 2800mAh is a big increase.
I am looking to buy a charger to mainly charge AA & AAA batteries, I often see the Duracell and Energizer chargers, $50 is the maximum I want to spend on a charger, also is it better to buy a charger without a fan, are the Duracell, Energizer and Uniross chargers better than Opus and are Amazon Rechargeable batteries the best and are they made by Panasonic but what charger should I buy, I want my batteries charged within 2 hours or faster.
AA and AAA should be charged slow or they can be damaged. The opus can charge pretty much any battery which the energizer and Duracell can not. It is a much more advanced charger.
Thank you, a very informative review of the Opus regards Doc Cox
thanks Doc
I like the new font, Ben.
thanks brother.
Have you seen the new Olight magnetic charger? I'll be receiving mine Friday.
yes i have it.
7:14 if your 18650 does not get to 4.2 its dead right? I think he doesn't know that 'charge' is not the V but the amount of Amps it can gen every hour. 8:08 its not the Amps of the battery its the amps you put in.
Hello... this charger - tester from what I have seen is very old, if mention is made of the most recent version 2.2 but it is still many years old. Is there any other more modern and better charger - tester?
Thanks for your Review! it got really good, but im just want to throw in the best Batterycharger is the Skyrc MC 3000 hope you doing an Review from that one too :)
if your PSU is 3A how can you charge 4 battery's with 1A do you need another adapter
Would you choose this over the Nitecore D4? This looks more sophisticated.
Is There any better , more functional charger than this? If yes which one and why?
It’s pretty good. I still use it but I recently reviewed a new one that I use currently.
@@livingsurvival which one. Link..
Can't find one that comes with the US adapter. They all say "Discontinued" except for the BT-C3100v2.2 with the EU plug
I like this charger very much, but dunno whether it´s the best one. The cooling fan is a bit annyoing and I have concerns about the longevity of a small fan with high rpms. It also is a bit confusing this fan will also work if I charge 4x AAA with 300mA, I don´t think it´s necessary.
And I still don´t find the homepage of Opus so far, didn´t exist?
Ok and do you.
Hi I would like to know if I can put 3 18560 batteries in serie and charge each one with a tp405 in parallel with the batterie.
Thank you very much
So, if the 18650 and 26650 are 3.7 volt batteries why do they go up to 4.2? I figured 3.7 would be the max...
3.7v is the _nominal_ voltage for a LiPo (Lithium Polymer) cell. Max is 4.2, min is ~3.0. Max and min values will vary depending on cell chemistry and manufacturer, but those above are the generally accepted limits for LiPo.
Hi, bought a Nitecore intellicharger i2 and chargered some batteries with no problem. I bought a TRUNITE TC2 v2 and came in the mail today and put the battery that came with it in the Nitecore and after awhile I started to smell hot plastic. Checked the charger and it was getting pretty warm and smelled like hot plastic. Shut it down and nupluged it.. Afraid to use it . Any idea what to do?
Thank you very much for your video.
I just bought 2 brand new BT-3100. The (quick test) internal resistance reading is different from my other separate digital internal resistance tester. Is the interal resistance accurate on the OPUS? I trust my other digital internal resistance tester.
I would trust your other tester as the opus can be all over the place.
@@livingsurvival damn lol. I purposely bought the OPUS for the capacity tester. Is the mAH capacity accurate on the OPUS at least?
@@christopherowens2635 yeah it’s a great unit for discharge and recharge. Internal resistance doesn’t really matter to me.
@@livingsurvival Okay 10-4. That’s good enough for me. Just needed the discharge and charging features. Thanks for putting up a review video.
Hello there. at my first charge i open the opus put 4 18650 bat., push nothing button and start to charge at 500mah for 3.5 hours. after i see time goes 0 and start charge again. i put off the battieries. i read at manual that when charge fulls then opus start a new tickle charge to give 10ma more. i check my battieries and all full but didnt let complete the tickle charge. is this right? opus should stop charge when is full automatic? Also my battieres are 3000mah . the opus should write 3000mah when charge is full or use another scale ( i see it cant write 4 digits, so it will say 300mah?)
Thx and sry for my english :D
Hm 🤔. I'm thinking to buy it. I see it has 200mA minimum charging speed which is perfect for AAA's. Is it better than the Xtar VP4 Plus Dragon?
Great video but you need a better tripod for your second camera.
If this also charged LiFePO4 cells it would be the perfect charger.
This is SO timely Ben! I'm looking to upgrade my charger systems right now. Does this one have an automatic individual shut-off when cells are charged?
yes
Living Survival Excellent! Thanks man!
Charles Collier same
Hi. Thank you for a really great review.
thanks Martin
Video quality is superb. What kind of camera?
What would be the best/easiest charger to use for 18650s and high drain 18650 batteries? Im new to the flashlight hobby
Not bad! Not quite what I'm looking for (need something that'll do rechargeable D's) but I may still pick this one up to replace my old BC-900 that only does AA/AAA's--It works well for what it is, but having to set the modes within x seconds of powering up is a pain.
Nice coffee!! Gotta love Tim's
daily ;)
props for Tim Hortons
once the batteries/batteries are fully charged do you get a final reading of what their capacity really is? Maybe times batteries claimed to be a certain mAh but end up being way lower than advertised.
mAh is usually lower so I base if off of volts instead. those 18650's i had in there in the video got done a short time later and they were all at 4.2 volts. If I check the mAh it will be lower than whatever the battery is because the counter in the charger doesn't start at zero unless you discharge fully first. so that is the only way to get a more accurate number and since you don't have to fully discharge li-ion i never worry about mAh just the voltage.
Out of curiosity, what makes the Opus BT-3100 better than other chargers like the Xtar VC4? I owned and used a Nitecore i4 mk1 from 2012-2017, often daily, and it worked great until I tried to 'modify' it to make it charge my LG V10 phone battery, which involved soldering wires onto - & + terminals on 2 bays, which worked for a year, but it died afterwards.
The only downside to the i4, was the lack of an LCD screen that shows useful info, like voltage, amount of charge in mAh.
Now I've got an Xtar VC4 that I've been using for 21 months without issue. But I've read quite a few peoples' posts at candlepowerforums, who say the Opus BT-3100 is the standard. Recently ive noticed the Xtar VP4 Dragon, but don't know much about it.
is there another charger better than this one? I need it mostly for AA batteries.
thewirecutter.com/reviews/best-rechargeable-battery-charger/
www.filterjoe.com/2017/03/11/best-budget-chargers-bqcc55-fct344-bqcc17/
Most people prefer to charge quickly and that can cause extra heat and more damage to the battery if the charger misses termination. The Panasonic BQCC17 is a slower charger but has most optimum charge current for AA and AAA. I think all the chargers in those articles are decent except for the CC55 which can be damaging as you will see. Also if you have money to burn a professional choice for a lot of photographers for an 8 bay AA/AAA nimh charger is the Maha mhc808m.
I was wondering if the quick test mode would also work to test non rechargeable batteries (classic AA 1.5V)?
Sph ax Yes. You can test non-rechargeables in the quick test mode.
top 2 18650 chargers these days?
@M D. Huz Not my fav charger
nice review.One question bt-c3400 can be used to "revive" dead shells.Does this one has this function too?
it can discharge and recharge and that sometimes will revive a dead cell.
with bt-c3400 you just put a 0v shell and revives it.I quess the same is with this charger?have you tried?
I just want to see the true mAh of a battery, as often you've seen some 18650 batteries on Ebay showing 3000, 4000 mAh while the brand name batteries only show 2400 +/-. Can this charger show me the true mAH after a battery is fully charged?
Also, you mentioned a coupon code to purchase this charger, what is it?
Liem Nguyen Yes, the charger will display a battery's capacity, however, it will fully charge a battery, discharge it, and charge it full again, in order to do so accurately. It is the time it takes to discharge the battery in combination with the discharge current that is used to determine the battery's capacity. Apparently, measuring the time to charge a battery at a set current is less accurate to determine a battery's capacity, as there are losses involved.
I've bought 4 or 5 NITECORE Digichargers, winding up giving many to friends. Then, after 9.5 months, mine died after using it daily. I liked the NITECORE because it could accomodate 18650s amd even 36650s. QUESTION: do You feel it is better to leave these units on all the day long rather than just plugging it in only when You need it? Thanks, John
i plug it in when i use it.
thanks man. Yeah, that's what I did, and after 8 months, zap, no more. I have a friend who leaves his constantly plugged in, and his is still alive. Just wondered if You had thoughts on that.
John Hoffman which nicore accepts 36650 batteries? My d4 takes up to 21700 but its very tight. My opus bt 3100 fits 21700 max with ease.
i havn't had great luck with these chargers
1st one had bad port would only charge at 50mah
Second unit first port again needs battery to be in a VERY specific spot to detect and charge
Fan is very loud should use a larger slower fan on the bottom of the unit instead of tiny sonic speed fan on side
how many 26650 batteries can this charger do at a time???
THOMAS KRISTENSEN only 2 at a time
LOVE this charger
Didn't realize you could recharge AA & AAA with this Charger!?... What Brand did you use in the Vid ??
Hi ..please question
i want best battery charger .. i found la Crosse Technology charger and people recommend it.
but !
i read the reviews at amazon about ( la Crosse Technology charger ) maybe many of the issue that face people with this charger .. that it won't work for too long time or some things won't work like mode button... i mean short life ..some of them after 1 year some of them more or maybe less ?
is this true ?
because i want good charger .. but i don't want it to dead in few months or few years.
its a great charger. it has a 3 amp input but the only mistake in the review is it outputs 4 amps. like you showed 4 batteries times one amp. input is always lower then output. look at a wall wart charger. it amplifies it. .2 amp cell phonr charger can put out near a amp
2 batteries one in each outer slots can do 2 amps for each battery
awesome, I was wondering that. thanks for the clarification!
Guys can I use a phone charger to plug it into the battery charger ? I have the one from SOAIY? Or do I have to use the usb cable and charge it from my laptop?
I'm finding it hard to find a charger that will charge 18650 and 20700 and those are the two batteries I use the most this charger your reviewing right now on its cover does not show that it will charge the 20700 battery. So does that mean it'll charge it but it's not listed or it won't charge it at all? I had to drop down and buy the B 0-4 battery charger because it did both. Where I would have liked to have had one that individualized the statistics on the battery the testing and everything like the one you're doing. But it's hard to find one that does both types of batteries.
Jimmy Clark I have the opus by 3100 had for about a year maybe a bit less max is 21700. Its not to tight even with the golisi 21700 s I like the charger not sure of my version but no no matter what rarely will it charge to a full 4.2 no matter the battery mah or how many changing from 500 to 1000 mah. Doesn't help either. So when my tests are done on battery capacity volts reached are 4.17 to 4.18 I toss them on my d4 Nicore to finish to 4.2 volts nitecore d4 21700 s charge but its to tight to my liking.
Can you check how much mah is in the battery?
Jonas Pärsson Yes, with the charge-test mode. In this mode the battery will be charged full, then discharged, then fully charged again. The time it takes to discharge at a defined current determines the total mAh, ie. the battery's capacity; that number will be displayed.
can this charger be used in your car powered by 12vdc?
Yes
Does four 26650 fit at the same time?
polarweiß no only 2 at a time
Should i buy the opus 3100 or 3400,what is the difference & is your 3100 2.2 still working good? Thanks! I heard of some problems with the power supply shorting when discharge/charge cycle.Something about opus going with a cheaper POWER supply distributor now.Heard this in a forum but it only does it when discharge/charge cycle with 4 batteries at the same time.THANKS for any info that can help me out.
i use this one all the time. works great.
Hello, Great review. However, you mentioned something about Flux Capacitor... What is it about? Which charger has it, and does it do? Thanks,
That was a joke bro like people running low on blinker fluid in their car.
@@twohandsbusy where can i buy blinker fluid?
@@1981Superdragon just use a clear soda if you can't find it
@@PWgadgets now my blinkers don't work
Let's talk about your setup. I'll hit you up on World Wide Survival.
DO IT
Call me a nerd but I need just small batteries charged good fast and need it to work great for a long time for controllers what type do you recommend if my range is 1$-100$
this is the fastest of this type of charger I have used. i know for like RC they have chargers that are quick charge but not sure what types of batteries are best for those. check out candlepower forums they have all sorts of "nerdy" info lol.
Bonus feature: causes earthquakes! Jokes aside, why is the camera shaking on the close up shots? Also cheers for Tim Hortons, from Canada
yeah...kinks i gotta work out still. timmy hoooooes
forget all that noise - check out the Foxnovo 4S
i'll check it out, thanks.
That Tims in the corner! Are you Canadian, Ben?
nope, but Michigan is close.
Ah I see!
Hey Ben, how are you?
Do you think that this charger is better than Nitecore D4 Li-ion Ni-MH NiCd LiFePO4 Smart LCD ?
yep.
Hey Ben, is there any chargers out there that have 4 slots and can charge about anything plus has a USB for solar or battery bank?
you mean to power the charger? goalzero makes the guide 10 which can charge AA/AAA via solar or USB.
I have the Goal Zero. Only problem is the proprietary USB cord and it won't charge my 18650's. The way things are progressing so fast I'm sure we will have it all soon.
Yes, look at the SoShine. I can take both 12v and USB input and they have a 1, 2, and 4 channel version. But, it isn't quite as nice as the OPUS and its discharge/cap test isn't as good - basically it only shows you mah input, rather than output. And its not as high a current. In short, the OPUS is the very best charger out there for the money. If you are willing to spent over $100 then there are a bunch of options.
And why do you really need USB? Most solar banks are 12v and the OPUS takes 12v input. And if you REALLY need USB input, you can get external adapters that readily convert USB to 12v (boost converters) - I have several. This is what an 18650 power bank does - it boosts 3.7v lithium up to USB 5v, so its the same concept.
I'm an American living in the Philippines. We have everything from political instability, typhoons, volcanoes,earth quakes and tsunamis. I try to be bomb proof when it comes to extended brown outs.
We're can I buy a 18650 charger ??
gearbest, amazon, local vape store.
lol...yes but i want to have a flux capacitor !!!
Please do not charge lithium battery’s at more than 1/2 of their total capacity mah in mah or amps (mah /1000) charging a regular Samsung 25r (2500mah or 2.5 amp) battery at 2 amps will greatly reduce battery life and more likely cause the battery to catch fire and as they’re lithium these battery’s can only be extinguished by type d extinguishers (water is like petrol when they’re on fire)
I know I may seem like a paranoid nut but since I’m into drones and rc cars with huge lithium battery’s I’ve seen what these things do when abused like in this video please stay safe
Can any one please tell me does fake Opus-BT-C3100 clones exist as I am ordering 2 from ebay. Cannot fine anyware comparison about fake Opus-BT-C3100 clones.
I WISH I HAVE THAT BATTERY CHARGER!!!! :-D
Nice charger .
Crappy review. The only reference you made to checking the battery capacity was to say "you can use quick test and get some statistics". You obviously don't understand this, so you bang on non-stop about the only thing you do understand : charging currents.
LiitoKala Lii-500
Engineer!
I've been wondering what you guys do for charging all your batteries, I have a decent Nitecore charger but it's not nearly as good as all the bells and whistles this one has plus I don't have that many high powered lights yet (=5) just got Olight S1A and love it!
thanks for watching Bill
Great overview. I'm going to buy one now! I had a cheaper one that I bought and I accidentally put the batteries in backward and the charger no longer works. It seems it would have some sort of a 'fail-safe', but I suppose not.
Still have it, still use it.
it will charge a full 1 amp for all 4 channels....
Nice
Be careful ordering LiitoKala today via Amazon. They use shady shipping
practices on Amazon. My order was delay and never reflected an actual
ship date via Amazon tracking. Amazon advised me it was shipped but
interestingly the item went unavailable the next day on Amazon. I tried
to post a one-star review and Amazon filtered it out. Amazon's review
are now discredited. After several missed delivery dates and days of
delayed time I ultimately asked for a refund and ordered another
charger/discharger. By LiitoKala at your own risk.
too bad it won't charge standard alkaline batteries. Solar would make it perfect.
the most noisy charger on the market. Bought it today, its more noisy than all my electronics combined. Im gonna return this shitty noisy charger
Sophos Utm big mistake it's an awesome charger
the noise is negligible, get real and grow up
don't vape 12mg while watching this vid lol. that shaking has me all dizzy
LMFAO
Preciate that... didn't even notice til I saw this comment.lol
Ok, then it got REALLY shaky, surely would've noticed that.😉
You think it's the best, that doesn't make it the best. Nice commercial though! :-))
Hi
But I'm only 12
This charger no good , the fan always spoil.
Use it nearly every day my friend.
hi,MiBoxer gives us licese to sell his new c4 4-bay fast charger. In order to celebrate Black Friday. Here is a link of 10% off promotion. You and your family or friends may need it www.amazon.com/promocode/APZGEH5F3XG4F
The Liitokala Lii - 500 is better
why is lii better ??this look similar to lacrosse technology and they have the best aa charger i know because i have 6 of them
Is a shitty charger, don't buy it!. Don't listen who say that is good
i use it daily.
First
I was first but deleted it.