Extremely interesting. Solves a problem that everyone has sooner or later. Namely, revival of a good tool from the dead. Presenter has great skill as an educator.
We just upgraded from AGM's to Lithiums by building our own battery bank on our sailboat (we liveaboard) using 180 amp hour, 3.6-volt CALB cells, and a DALY BMS, wiring the cells in a 4s2p orientation. So stoked on the upgrade! We charge our lithiums in 2 different ways. We send the power from our 120 amp Balmar alternator on our engine to our 100 amp-hour sealed lead-acid starter battery. From there a Renogy 60 amp DC-DC charger takes the load from the alternator and puts it in a lithium profile and in turn charges the lithium batteries. It was a fun build!
Finally! Was able to get my 18v harbor freight impact drill to work just like this. I used 10 batteries 5s2p. It was a tight fit. The old batteries would self drain after each use. But now, used it and after a week its still fully charged. Awesome. You are a life saver. Or I mean a drill saver. Thanks, and good luck!
Great vid, thanks! I switched from a battery to wired drill when my batteries died after 3 years use, and I found out the price of a battery pack was the same price as the drill! Most of my drill use is within reach of a plug socket, and I don't have to worry about my project coming to a halt because both of my battery packs are have ran out of juice ;) But I have kept the old drill so I could resurrect it now, cheers!
Awesome. Amazed at your confidence opening up the Battery case and modifying to replace with Li-ion Batteries and Bonus metering. I always have the fear that 'rough handling' battery packs is hazardous. Truly you have done a super super job. Luckily I have not thrown away my industrial AEG 14.4V Nicd power drill. I hope someone can help me convert like you did. 👏👏👏
I have the same Bosch 9.6V drill. I used three 18650 2.1AH Lithiums from a 6 cellToshiba laptop battery bought on Ebay for £3, (£2 postage) so they cost me £2.50 & 3 spare cells. I wired a 12V 5W Zener in series with a 39 ohm resistor across them, then used the voltage across the resistor to switch on a transistor wired across the existing thermistor to switch off the charger (which also has a convenient max output of 12.6V 750mA). Charges them up to 4V each so likely no balancing problems & no overcharge. I can still use the original Bosch charger for both this battery and for a spare 9.6V 1.7AH NiCd battery pack. Works fine, plenty of torque and hasn't caught fire yet.
I have been messing with 18650 batteries for over a year a assumed they all had around same current draw until this video, I am not going to buy laptop battery packs anymore thank you and great vid.
I have a pair of 7.2V Bosch drills that look very similar to your 9.6V. They both are around 20 years old and replacement betteries about 6 years ago cost more than the drills did. I didn't go as far as you have, I just fitted twin 18650 battery holders inside the original battery case with thicker wire and used high drain 18650's. The original snap mounting onto the drill holds everything together quite well. Doing it this way does mean I can replace just the batteries when they need it. The mistake I made is that they do not have any protection circuits so I will have to get batteries that do. It was your video that made me bite the bullet and convert the very old dead original batteries. With the original batteries these little 7.2V drills could punch a 100mm screw around 5mm below the wood surface. Just goes to show that Volts has absolutely nothing to do with power, It's volts x amps = WATTS that matter. Ni-Cd actually can deliver a higher current but the 18650's seem fine.
I was just thinking of doing this for my battery powered impact gun of which the battery pack is no longer in production and will lose its charge within 2 days even being on its own without being connected. Now I just need to get 5 matching batteries to make up the 18 volts. I use the 18650 for phone chargers and flashlights but now it will be even more useful for work since I'm a mechanic and the old battery just doesn't hold up to the job anymore. Awesome Video!
great idea! I noticed your drill was rated for 9.6v. Three LI-ion batteries in series have a max. voltage of 12.6V and a nominal voltage of 11.1V which means your drill will draw about 16% more current and might overheat and burn out. On the up-side, the drill should be more powerful. I think it's worth taking a chance on this as it's such a great idea.
My personal opinion, I would replace with high capacity Ni-mh batteries, the lithium are a pain in the ass, you always have to make sure the batteries are balanced with a balance charger(some say you can charge a few times without the balance lead, but if the battery was sitting for a long time, and a cell looses it's charge, then you got a fire). At least with Ni-mh batteries, you can put them on trickle charge to balance out all of the cells. I did this with one battery, used an old charger, gutted it, and use it as a base so I can hook up to my Imax b6 charger. (which used to always kill batteries,as it wasn't a computerized charger with delta-v cutoff, so the batteries would just cook.) Every so often, I'll just hook it up to my constant current charger and just let it trickle at 100 mA for 24 hours to even out the cells.
Most if not all of the branded 18650 have a temperature switch built inside. If the temperature of a cell increases to about 90 deg. celsius and above you hear a slight pop and the battery stops working.
Good work. A small note: take off the ring or cover it with electrical tape when dealing with electricity. Lithium batteries pack quite a punch, and if they short across the ring you are in for a serious burn.
I needed to see this bit of knowledge this past year when that happened to me. Not sure how I did it, but yes, wedding ring came in contact and something on the other end, and damn if it didn't leave a bad burn for the next week and reminder that marriage can hurt.
Thank you very much for this video! I have a old complete Ryobi set of power tools that will be be having this operation performed on... You the man!!!
I have put the 3.7 volt batteries in my 18 volt Dewalt and works a treat, I extended the case, I bought plastic battery holders on Ebay, I used 10 batteries in total, put 5 batteries in series 19volts, then 2 packs in parallel, the Dewalt charger wont charge them so I got a 24 volt charger, bought a dc to dc converter off Ebay with adjustable voltage,
Nice job! I did a similar job on my prev gen to yours Bosch 9.6v drill - the PSB-VE with the metal clip that secures the battery in place. I used 3S bms board rated 40A, sold as for drills and power tools and samsung ncr 3000mAh cells. I have a MOT spot welder to connect up the cells. I had to reshape the old battery case a bit to fit the 3 cells as a flat pack - not too difficult with a hot air gun to soften the ABS. I fitted the case with a dean connect and JST balance connect like you so I could use my Imax (direct connection to the cells), and a 5.5mm jack for 12v DC input to the BMS pcb, alternative charge mode (diy ATX bench power supply). LED battery charge indicator + switch like yours. To put the case back together I used plastic weld solvent (works well on ABS) and soldering iron with diy plastic soldering tip (copper nail cut down). I think it is beneficial to have the protection of an appropriate BMS while you're using the drill. Also this type of BMS with input and output terminals the same allow the possibility of using the original charger because the input will be through the BMS. In practice I noted that the voltage across the charger (rated 7.2-12V) terminals was 19V on my multimeter - could blow the BMS? More commonly the original charger's won't fully charge the LIPO's.
What a coincendence! I was about to replace my exactly the same model cordless power drills battery. You have done very good job posting such useful video. THANK YOU. I will certainly follow your way.
Superb video, I have an old DeWalt with a dead NiCd that I've been planning to do just this too, most people would junk it nowadays - screw that! Thanks for the video!
Fast swap case for 18650 cells would be nice, now everything is solderd and glued, but if a cell dies you have to get it out. You could have used a holder > facing cells to the buttum and add maintenance door at the buttom.
Why do you not charge the 18650 cells in Li-ion mode? I think it is somewhat saver and charges the batteries till 4.10 V each. Also more than enough to start. Further it is a very good alternative!
Like a lot of smart capable people your video makes assumptions the viewer has a similar skill set. As a result you speed through valuable specifics of your custom project with little detail, while conversely lingering over things that apparently fascinate you - like unpacking and fondling a commodity battery set. As a result what could have been an instructive and helpful video to a huge number of cordless tool owners tends to trend more towards
...ha... a show project accessible mostly to a much smaller audience of tech aficionados. Many of whom are not so appreciative. Even so, still the best video on this topic I've found. And it's not like you titled it "how to". So. Good job.
M Bright///// I partly agree with you since my skills are obsolete, thus small. When I went to electronics school we still used tubes. Transistors and ni-cad was "state of the art". But the man did a great job on the video. Try just asking him additional questions, instead of just negative remarks. I think he will be happier to respond to a more positive remark, or question. I would like to know what a BMS is...
Nice vid! I've done the same thing with a 18V Parkside cordless drill which had 15 dead Ni-Cad cells. I've used 5 LG IMR18650-HE2 2500mAh cells capable of drawing 20 amps. Works wonderfull. However, I've ordered those LG cells with spot welded tags so I didn't have to solder directly on the cells. Li-Ion cells don't like high temps, they can be damaged easily. Nice work, thanks for sharing!
Hello, thanks for the video, I saw in another video, that soldering the battery, it diminishes the useful life of her, but I realize that there is no other cheap and economical way to make that connection.
Excellent bro!!!!! Very amazing project as U just revived the drill into a new life. I also did a same project with 3S Lipo battery b4 seeing your video. However, I could be using a voltage checker like U which I did not. Rather, I hook up it outside on charging plug. I learnt some idea frm your video too. :-D
Have you considered using or making your own spot welder for the battery tabs? I always cringe when I see someone apply solder directly to cell terminals ;-) Apart from that - Love your ingenuity, workmanship and videomaking abilities. It's a joy to watch! :-)
I wish you used bms circuit too.no problem while charging you are using i max.however, it is also necessary for the batteries to discharge evenly while using the drill.
The old battery pack was 9.6 volts (eight x 1.2v NiCd cells), but your new pack is 12.6 volts when fully charged (4.2 x 3) and 9.0 volts when fully discharged (3.0 x 3). Do your cordless tools accept the higher voltage without damage? And what about capacity. Sure the drill spins faster with more torque when given 12.6v instead of 9.6v, but can you drive in the same number of screws or operate for the same length of time before the tool has depleted the battery? I would expect that the capacity is significantly reduced, given that you have 3 cells instead of 8 and the total mass of chemicals in the batteries is half (your weight comparison) even though LiPo chemistry is more energetic than NiCd. I'm not making any claims here, only asking questions with my real concerns and the reasoning behind the questions (which could be faulty). I'd be very interested to hear your experience. Particularly because I am tempted to do something like this with my Ryobi 18 volt battery packs, if they will hold 5 or 6 cells inside of them.
Most cordless tools can accept slightly higher voltages without issue, Might effect the life in the long term but I find that usually something else craps out first like the gears getting chewy. For instance often those 20V tools often have the same motors in them as the 18V and those same 18V tools accept 20V just fine. I have 3d printed battery conversion adapters so I don't have to worry about getting stuck in a system. Lithium battery packs really are worth it btw, they stay charged on the shelf, no more coming back to a tool and finding it dead, nicads love to just lose power over time. Well if you do it yourself you will have to make sure whatever you rig up doesn't draw power when "off" but yea. milliamps-watts.appspot.com/ Calculator to see mAh in relation to voltage.
Oh also you can get some very small dc to dc buck converters, then you can limit the voltage. Perhaps install a trim pot so you can overdrive it when you want the power and under when you want the battery to last. Would give you a consistent voltage also instead of dealing with drop off, I think actual lithium tool batteries may have that built into their modules since they often just cut off instead of losing power.
the 8 nicd cells are only 1.2volts at what is called their nominal voltage. fully charged they are 1.4volts which takes the voltage up to 11.2 volts so the difference is probably within it's tolerance
I have always recycled my old tools, using 3.7 volts is the way to go, if you wanted to, extend the battery case so the batteries stand up thus using more batteries as better amp hour, using a small spot welder to join is perfect, in Dewalt watch out for the temperature sensor near the connector as it looks like a piece of wire so you can use the existing charger, the 1.2 volt existing batteries are expensive in these tools, so we all think alike.
Very good method, but there is much much simpler !! You just have to solder an XT60 connector to the + and - of the Drill and simply use a 3 or 4s Lipo battery with your drill !! The advantage is that you 'll be able to have more or less power with 3 or 4 s battery !!!
Excellent tool! I have the very same and it work still fine, it was converted to 3S2P lithium from a laptop battery a few years ago and still running. Great work! PS: i don't balance but i charge only 4v per element.
What would be really awesome is if you replaced the low voltage alarm with a low voltage cut off - "Battery protection circuit". I think that video would reach 1 million views.
You can use double (triple, quadruple) the amount of laptop 18650's in parallel to achieve the necessary constant discharge rate. Of course then you'll need to modify (extend) the battery case to fit them all in. Another option is to mod a DC in jack to the battery pack or the drill, (my preferred method, behind the motor). It'll bypass the battery if wired correctly (DC - for the battery goes through the DC jack).
As shown, the batteries must be installed in pairs, in order to reduce the load on each of them (see the channel). 2. How to align the charge on each Batteries? They can not be charged in series.
Thank you for sharing. And, here, I descovered how to power off the low alarm buzzer (just disconnecting the ground wire - the first). But I am not sure that the voltmeter will not consume current even if powered off like this. What is your opinion?
nice, short enough, clear statement and sound! so the LED PCB is also a protector? you used many glue/epoxy, can you reopen it when needed? thanks for reply.
I've managed to use the original charger with it by putting a 3S Battery management inside the battery pack. The Bosch charger show full at 12,26V. That's 4,086V per cell. So they don't get 100% full. I had to solder the temperature sensor to battery minus. Otherwise the Bosch charger won't start charging. The BMS need to be at least 25A.
Next time you could glue some blocks in the corners of the battery case and drill and screw together with self tappers. This will allow replacement of any parts easy.
Just a tip instead of using hot glue and 2 part epoxy ,Just use super glue then sprinkle some bicarbonate of soda powder on the super glue ,it dries instantly and rock hard,,works for me
A better way to connect the cells would be to use a capacitance discharge spot welder like the one I built on my channel. It is fairly simple and inexpensive.
Absolutely. I didn't mean to be negative in any way. I'm just trying to show everyone that it is fairly easy to build a welder if you plan on doing this sort of thing more than once.
Good video. I did the same thing with an 18 volt battery a few years ago and it worked well for a short while. It was okay as a little project, but not really practical. It is too much hassle for regular use. Did you know that with Ridgid brand tools from Home Depot you can register for a free lifetime service agreement which also includes a lifetime warranty on batteries.
Very nice and helpful video, but tell me is it safe to go over factory 9.6 Volts? I need to change mine old NiCD 12 Volt batteries, if I go with 4x3.7 Volts, is it ok also?
Great video! I have that meter but can't find "pin out" instructions anywhere. I was hoping your LINK lead to a useful pin out... Do you have pinout info, please? Thank you.
Sir, May I ask .. I want to change the 12v nicd cordless battery to a 12v li ion, so what is the appropriate value (ampere) for bms ??? 25a or 40a and so on ... Thanks sir...BOSCH GSR 12-1
there was one thing I didn't quite understand what you said: What are you doing over the speakers to lower the volume? (also, I'm watching on my phone so it's kind of hard to tell visually what that white stuff is). Intriguing project; I'll probably try it soon.
It looks like he used removable poster putty in the holes. That's a really good tip, these voltage meters are REALLY loud, meant to be heard from a model airplane or car that's far away.
Too fast for a novice to understand easily, even going back and viewing multiple times. Fortunately there are several more videos on the procedure so I'll get it soon enough by combining the lessons from the different videos. The addition of the meter is different and cool.
Hey you turned it into a 12 volt drill because those are 4.2volt each. Would this work for a 12 volt drill or would you recommend i put 4 18650 cells into a drill? How about a 18 volt drill?
Hello i have a Question. Not sure if this has been answer before But if all cells are fully charge can be from 12.6v up to 12.8v Wouldn't it hurt the Drill being it's only at 9.6v?
Thanks. that is exactly what i was looking for. I just want to ask you if it is possible to get a detailed scheme of wiring. Something like fritzing or so. Thanks a lot in advance.
Extremely interesting. Solves a problem that everyone has sooner or later. Namely, revival of a good tool from the dead. Presenter has great skill as an educator.
We just upgraded from AGM's to Lithiums by building our own battery bank on our sailboat (we liveaboard) using 180 amp hour, 3.6-volt CALB cells, and a DALY BMS, wiring the cells in a 4s2p orientation. So stoked on the upgrade! We charge our lithiums in 2 different ways. We send the power from our 120 amp Balmar alternator on our engine to our 100 amp-hour sealed lead-acid starter battery. From there a Renogy 60 amp DC-DC charger takes the load from the alternator and puts it in a lithium profile and in turn charges the lithium batteries. It was a fun build!
Finally! Was able to get my 18v harbor freight impact drill to work just like this. I used 10 batteries 5s2p. It was a tight fit. The old batteries would self drain after each use. But now, used it and after a week its still fully charged. Awesome. You are a life saver. Or I mean a drill saver. Thanks, and good luck!
you got 10 - 18650's to fit in the original HF battery case?
Nice job in production of this video. The narration, no music or miming. Two thumbs up.
Visit this website if you want to learn the best method to recondition your batteries: JoxCharge. com
SCAM!
Beaches south of L.A. sgarar sgagir saga
Michael Reyes p
Beaches south of L.A. Qq
Great vid, thanks! I switched from a battery to wired drill when my batteries died after 3 years use, and I found out the price of a battery pack was the same price as the drill! Most of my drill use is within reach of a plug socket, and I don't have to worry about my project coming to a halt because both of my battery packs are have ran out of juice ;) But I have kept the old drill so I could resurrect it now, cheers!
Awesome. Amazed at your confidence opening up the Battery case and modifying to replace with Li-ion Batteries and Bonus metering.
I always have the fear that 'rough handling' battery packs is hazardous. Truly you have done a super super job.
Luckily I have not thrown away my industrial AEG 14.4V Nicd power drill. I hope someone can help me convert like you did.
👏👏👏
I have the same Bosch 9.6V drill. I used three 18650 2.1AH Lithiums from a 6 cellToshiba laptop battery bought on Ebay for £3, (£2 postage) so they cost me £2.50 & 3 spare cells.
I wired a 12V 5W Zener in series with a 39 ohm resistor across them, then used the voltage across the resistor to switch on a transistor wired across the existing thermistor to switch off the charger (which also has a convenient max output of 12.6V 750mA). Charges them up to 4V each so likely no balancing problems & no overcharge. I can still use the original Bosch charger for both this battery and for a spare 9.6V 1.7AH NiCd battery pack. Works fine, plenty of torque and hasn't caught fire yet.
I have been messing with 18650 batteries for over a year a assumed they all had around same current draw until this video, I am not going to buy laptop battery packs anymore thank you and great vid.
tifevuo cgir
I have a pair of 7.2V Bosch drills that look very similar to your 9.6V. They both are around 20 years old and replacement betteries about 6 years ago cost more than the drills did. I didn't go as far as you have, I just fitted twin 18650 battery holders inside the original battery case with thicker wire and used high drain 18650's. The original snap mounting onto the drill holds everything together quite well. Doing it this way does mean I can replace just the batteries when they need it. The mistake I made is that they do not have any protection circuits so I will have to get batteries that do. It was your video that made me bite the bullet and convert the very old dead original batteries. With the original batteries these little 7.2V drills could punch a 100mm screw around 5mm below the wood surface. Just goes to show that Volts has absolutely nothing to do with power, It's volts x amps = WATTS that matter. Ni-Cd actually can deliver a higher current but the 18650's seem fine.
I was just thinking of doing this for my battery powered impact gun of which the battery pack is no longer in production and will lose its charge within 2 days even being on its own without being connected. Now I just need to get 5 matching batteries to make up the 18 volts. I use the 18650 for phone chargers and flashlights but now it will be even more useful for work since I'm a mechanic and the old battery just doesn't hold up to the job anymore. Awesome Video!
great idea! I noticed your drill was rated for 9.6v. Three LI-ion batteries in series have a max. voltage of 12.6V and a nominal voltage of 11.1V which means your drill will draw about 16% more current and might overheat and burn out. On the up-side, the drill should be more powerful. I think it's worth taking a chance on this as it's such a great idea.
Good shit, man. Taping over those annoying piezo speakers was a great idea.
Excellent piece of workmanship.
Very nicely done. Great idea for using the LIPo battery voltage tester and installing it into the battery pack.
Hi, good job, I have done almost the same to my old skil 12v drill, but with sealed lead acid batteries instead, much cheaper and works like a charm
My personal opinion, I would replace with high capacity Ni-mh batteries, the lithium are a pain in the ass, you always have to make sure the batteries are balanced with a balance charger(some say you can charge a few times without the balance lead, but if the battery was sitting for a long time, and a cell looses it's charge, then you got a fire). At least with Ni-mh batteries, you can put them on trickle charge to balance out all of the cells. I did this with one battery, used an old charger, gutted it, and use it as a base so I can hook up to my Imax b6 charger. (which used to always kill batteries,as it wasn't a computerized charger with delta-v cutoff, so the batteries would just cook.) Every so often, I'll just hook it up to my constant current charger and just let it trickle at 100 mA for 24 hours to even out the cells.
Most if not all of the branded 18650 have a temperature switch built inside. If the temperature of a cell increases to about 90 deg. celsius and above you hear a slight pop and the battery stops working.
I love how you used a drill to fix your drill... :P
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Good work. A small note: take off the ring or cover it with electrical tape when dealing with electricity. Lithium batteries pack quite a punch, and if they short across the ring you are in for a serious burn.
Muzica de petrecere
Unfortunately, I don't understand English and admire your hands-on ability!
@@jackchen5589 我既不...使用带翻译字幕的谷歌翻译
Mccming007@gmail.com
I needed to see this bit of knowledge this past year when that happened to me. Not sure how I did it, but yes, wedding ring came in contact and something on the other end, and damn if it didn't leave a bad burn for the next week and reminder that marriage can hurt.
soldering on an 16850 terminal? you've got some balls of steel my friend
Thank you very much for this video! I have a old complete Ryobi set of power tools that will be be having this operation performed on... You the man!!!
I have put the 3.7 volt batteries in my 18 volt Dewalt and works a treat, I extended the case, I bought plastic battery holders on Ebay, I used 10 batteries in total, put 5 batteries in series 19volts, then 2 packs in parallel, the Dewalt charger wont charge them so I got a 24 volt charger, bought a dc to dc converter off Ebay with adjustable voltage,
Nice job!
I did a similar job on my prev gen to yours Bosch 9.6v drill - the PSB-VE with the metal clip that secures the battery in place.
I used 3S bms board rated 40A, sold as for drills and power tools and samsung ncr 3000mAh cells. I have a MOT spot welder to connect up the cells. I had to reshape the old battery case a bit to fit the 3 cells as a flat pack - not too difficult with a hot air gun to soften the ABS. I fitted the case with a dean connect and JST balance connect like you so I could use my Imax (direct connection to the cells), and a 5.5mm jack for 12v DC input to the BMS pcb, alternative charge mode (diy ATX bench power supply). LED battery charge indicator + switch like yours.
To put the case back together I used plastic weld solvent (works well on ABS) and soldering iron with diy plastic soldering tip (copper nail cut down).
I think it is beneficial to have the protection of an appropriate BMS while you're using the drill. Also this type of BMS with input and output terminals the same allow the possibility of using the original charger because the input will be through the BMS. In practice I noted that the voltage across the charger (rated 7.2-12V) terminals was 19V on my multimeter - could blow the BMS? More commonly the original charger's won't fully charge the LIPO's.
That's some great content and production value. That kit looks great.
If you double up on the batteries, with three in series, and another three in parallel, your drill will last MUCH longer. Nice use of the indicator.
Incredible that is amazing I need you to help me learn how to master series
From 9.6 V to 12V is close enough for that 9V motor.
Can be changed with old changer
Thank you for this video. I was able to convert my drill to li ion batteries. It has given a new life to my old drill.
Just had to say, thank you SO SO SO much for installing and using a balance cable!!!
What a coincendence! I was about to replace my exactly the same model cordless power drills battery. You have done very good job posting such useful video. THANK YOU. I will certainly follow your way.
Very nice video and ideas for the new job
Thank you very much
Superb video, I have an old DeWalt with a dead NiCd that I've been planning to do just this too, most people would junk it nowadays - screw that! Thanks for the video!
thanks Very much for your efforts in communicating all of the information on your videos...I have learned a lot...God bless brother...doug (kanada)
Fast swap case for 18650 cells would be nice, now everything is solderd and glued, but if a cell dies you have to get it out. You could have used a holder > facing cells to the buttum and add maintenance door at the buttom.
Why do you not charge the 18650 cells in Li-ion mode? I think it is somewhat saver and charges the batteries till 4.10 V each. Also more than enough to start. Further it is a very good alternative!
Like a lot of smart capable people your video makes assumptions the viewer has a similar skill set. As a result you speed through valuable specifics of your custom project with little detail, while conversely lingering over things that apparently fascinate you - like unpacking and fondling a commodity battery set. As a result what could have been an instructive and helpful video to a huge number of cordless tool owners tends to trend more towards
...ha... a show project accessible mostly to a much smaller audience of tech aficionados. Many of whom are not so appreciative. Even so, still the best video on this topic I've found. And it's not like you titled it "how to". So. Good job.
M Bright///// I partly agree with you since my skills are obsolete, thus small. When I went to electronics school we still used tubes. Transistors and ni-cad was "state of the art". But the man did a great job on the video. Try just asking him additional questions, instead of just negative remarks. I think he will be happier to respond to a more positive remark, or question. I would like to know what a BMS is...
Best video. Best use of utube. I love it its informative. 100 points to u. I never said these words to any1 b4
I wish you lived in SW Ontario Canada. I have several Makita tools that need the upgrade.
Nice vid!
I've done the same thing with a 18V Parkside cordless drill which had 15 dead Ni-Cad cells. I've used 5 LG IMR18650-HE2 2500mAh cells capable of drawing 20 amps. Works wonderfull. However, I've ordered those LG cells with spot welded tags so I didn't have to solder directly on the cells. Li-Ion cells don't like high temps, they can be damaged easily.
Nice work, thanks for sharing!
Goog work Ruud. Where do you buy the cells?
Great job on your video. Clear, easy to understand information. Thanks for posting.
Hello, thanks for the video, I saw in another video, that soldering the battery, it diminishes the useful life of her, but I realize that there is no other cheap and economical way to make that connection.
???
Eduardo Castellani
You can spot weld tabs and solder on the tabs instead of the batteries
*> Our battery reconditioning methodssss works for nearly all types of batteries > **t.co/3ycayBV4e1?gfadewe5g56** >*
Eduardo Castellani life of *it
Good to see a specific LiPo charger being used here. Do not try to charge with your old NiMh charger, it will kill your lithium cells in no time.
Excellent idea. Great workmanship. Loved your video! Thanks.
Thank you, very helpful. I had not thought to replace my batteries to lithium
Excellent bro!!!!!
Very amazing project as U just revived the drill into a new life. I also did a same project with 3S Lipo battery b4 seeing your video. However, I could be using a voltage checker like U which I did not. Rather, I hook up it outside on charging plug. I learnt some idea frm your video too. :-D
Very Impressive and excellent results.
Excellent thorough no-frills tutorial...Thank you from Australia 17NOV2017
A good idea and excellent work ... also well done and clean. I like very much.
Thnx
Would it be possible to get a full part list? I see a connector in the battery housing, the voltage tester and a small on/off switch.
Have you considered using or making your own spot welder for the battery tabs? I always cringe when I see someone apply solder directly to cell terminals ;-)
Apart from that - Love your ingenuity, workmanship and videomaking abilities. It's a joy to watch! :-)
JohnnyJim J //// Can you show a link for a spot welder?
I wish you used bms circuit too.no problem while charging you are using i max.however, it is also necessary for the batteries to discharge evenly while using the drill.
Very neat hack with balanced charging too.
I've got the same battery in 12V - wonder if I can fit 6 x 18650?
Only one way to find out.
it's a very nice project. I made my last week it's awesome
GOOD JOB
Nice project. I do have cordless drill. Will try the same after it's warranty gets over.
thanks brother it was helpful.. greetings from Peru
The old battery pack was 9.6 volts (eight x 1.2v NiCd cells), but your new pack is 12.6 volts when fully charged (4.2 x 3) and 9.0 volts when fully discharged (3.0 x 3). Do your cordless tools accept the higher voltage without damage? And what about capacity. Sure the drill spins faster with more torque when given 12.6v instead of 9.6v, but can you drive in the same number of screws or operate for the same length of time before the tool has depleted the battery? I would expect that the capacity is significantly reduced, given that you have 3 cells instead of 8 and the total mass of chemicals in the batteries is half (your weight comparison) even though LiPo chemistry is more energetic than NiCd. I'm not making any claims here, only asking questions with my real concerns and the reasoning behind the questions (which could be faulty). I'd be very interested to hear your experience. Particularly because I am tempted to do something like this with my Ryobi 18 volt battery packs, if they will hold 5 or 6 cells inside of them.
Most cordless tools can accept slightly higher voltages without issue, Might effect the life in the long term but I find that usually something else craps out first like the gears getting chewy.
For instance often those 20V tools often have the same motors in them as the 18V and those same 18V tools accept 20V just fine. I have 3d printed battery conversion adapters so I don't have to worry about getting stuck in a system.
Lithium battery packs really are worth it btw, they stay charged on the shelf, no more coming back to a tool and finding it dead, nicads love to just lose power over time. Well if you do it yourself you will have to make sure whatever you rig up doesn't draw power when "off" but yea.
milliamps-watts.appspot.com/
Calculator to see mAh in relation to voltage.
Oh also you can get some very small dc to dc buck converters, then you can limit the voltage. Perhaps install a trim pot so you can overdrive it when you want the power and under when you want the battery to last. Would give you a consistent voltage also instead of dealing with drop off, I think actual lithium tool batteries may have that built into their modules since they often just cut off instead of losing power.
the 8 nicd cells are only 1.2volts at what is called their nominal voltage. fully charged they are 1.4volts which takes the voltage up to 11.2 volts so the difference is probably within it's tolerance
check the current capacity of LiPo vs NiCd. the drill will work better than when he bought it new!
Something like 20V battery tool doesnt exist , always it is 18V it is just marketing. Every 18 V battery when is fuly charget is giving 20V .
I have always recycled my old tools, using 3.7 volts is the way to go, if you wanted to, extend the battery case so the batteries stand up thus using more batteries as better amp hour, using a small spot welder to join is perfect, in Dewalt watch out for the temperature sensor near the connector as it looks like a piece of wire so you can use the existing charger, the 1.2 volt existing batteries are expensive in these tools, so we all think alike.
Very good method, but there is much much simpler !! You just have to solder an XT60 connector to the + and - of the Drill and simply use a 3 or 4s Lipo battery with your drill !! The advantage is that you 'll be able to have more or less power with 3 or 4 s battery !!!
Excellent tool! I have the very same and it work still fine, it was converted to 3S2P lithium from a laptop battery a few years ago and still running. Great work!
PS: i don't balance but i charge only 4v per element.
Great video and one fantastic job, thank you
What would be really awesome is if you replaced the low voltage alarm with a low voltage cut off - "Battery protection circuit". I think that video would reach 1 million views.
Well both combined would be ideal. While 3 volt cut off is recommended you can discharge them to 2.5v if you just need 2 more holes in the wall
Lol he reached 2mil
Zhj
Nice tutorial, it will be more easier if there's battery circuit schematic
agreed
I did the same for my bosch 12v drill. However I wonder if I could still reuse the old NiCD charger or not
You can use double (triple, quadruple) the amount of laptop 18650's in parallel to achieve the necessary constant discharge rate. Of course then you'll need to modify (extend) the battery case to fit them all in. Another option is to mod a DC in jack to the battery pack or the drill, (my preferred method, behind the motor). It'll bypass the battery if wired correctly (DC - for the battery goes through the DC jack).
As shown, the batteries must be installed in pairs, in order to reduce the load on each of them (see the channel). 2. How to align the charge on each Batteries? They can not be charged in series.
Why not use a BMS chip which would let you charge on the original charger?
Thank you for sharing. And, here, I descovered how to power off the low alarm buzzer (just disconnecting the ground wire - the first). But I am not sure that the voltmeter will not consume current even if powered off like this. What is your opinion?
nice, short enough, clear statement and sound!
so the LED PCB is also a protector? you used many glue/epoxy, can you reopen it when needed? thanks for reply.
I've managed to use the original charger with it by putting a 3S Battery management inside the battery pack. The Bosch charger show full at 12,26V. That's 4,086V per cell. So they don't get 100% full. I had to solder the temperature sensor to battery minus. Otherwise the Bosch charger won't start charging. The BMS need to be at least 25A.
Regarding to the two small buzzers that you have transfered to the back of circuit board, do they have any polarity to be respected ? Thanks.
Next time you could glue some blocks in the corners of the battery case and drill and screw together with self tappers. This will allow replacement of any parts easy.
Great very informative video, thanks for sharing!
Just a tip instead of using hot glue and 2 part epoxy ,Just use super glue then sprinkle some bicarbonate of soda powder on the super glue ,it dries instantly and rock hard,,works for me
I have always heard that nicd are the best for powertool as they can give a lot of power in a short time.
A better way to connect the cells would be to use a capacitance discharge spot welder like the one I built on my channel. It is fairly simple and inexpensive.
+The Mechanical Philosopher yes, spot welder will be the best option, but because I don't have one, I simply soldered cells;)
Absolutely. I didn't mean to be negative in any way. I'm just trying to show everyone that it is fairly easy to build a welder if you plan on doing this sort of thing more than once.
Good video. I did the same thing with an 18 volt battery a few years ago and it worked well for a short while. It was okay as a little project, but not really practical. It is too much hassle for regular use. Did you know that with Ridgid brand tools from Home Depot you can register for a free lifetime service agreement which also includes a lifetime warranty on batteries.
very nice i want to update my old cordless drill to!
excellent video .. how long the batteries last full work.
Very nice and helpful video, but tell me is it safe to go over factory 9.6 Volts? I need to change mine old NiCD 12 Volt batteries, if I go with 4x3.7 Volts, is it ok also?
Love your videos. Always very well done. One question though ...what did you put on the buzzer speakers to make them louder? Thanks.
I don't know what you do for a living but I suspect you may have missed your true vocation in life! Nice video.
Can you use the existing Bosch 9.6V charger to charge back the 3 x 18650 batteries now in the battery pack?
Will try this too. Great stuff.
Great video! I have that meter but can't find "pin out" instructions anywhere. I was hoping your LINK lead to a useful pin out... Do you have pinout info, please? Thank you.
Sir, May I ask .. I want to change the 12v nicd cordless battery to a 12v li ion, so what is the appropriate value (ampere) for bms ??? 25a or 40a and so on ... Thanks sir...BOSCH GSR 12-1
there was one thing I didn't quite understand what you said: What are you doing over the speakers to lower the volume?
(also, I'm watching on my phone so it's kind of hard to tell visually what that white stuff is). Intriguing project; I'll probably try it soon.
It looks like he used removable poster putty in the holes. That's a really good tip, these voltage meters are REALLY loud, meant to be heard from a model airplane or car that's far away.
Oh, stuff for wall hanging?
Yup!
3Dsjk 6
mutant. figures to
Great presentation, Thanks for the links
great conversion..thankyou for sharing
That's a lot of work I have to give you credit how much would you charge to make me one
Was it possible to do 3s2p pack or not to much space in case?
Too fast for a novice to understand easily, even going back and viewing multiple times. Fortunately there are several more videos on the procedure so I'll get it soon enough by combining the lessons from the different videos. The addition of the meter is different and cool.
Did you discuss the AH difference?
impressive! great job!!
Wasn't clear on how you wired the rest of the LiPo Power Meter pins, (besides the + & -).
you are using the old ni cd charger for the new lithium battery without problem?
Dude Use soldering Flux.
dont burn battery terminal with soldering iron.
you done a good job tho.
Bravo
NOTE you can NOT use the old charger to charge the Li-ion batteries
Hey you turned it into a 12 volt drill because those are 4.2volt each. Would this work for a 12 volt drill or would you recommend i put 4 18650 cells into a drill? How about a 18 volt drill?
Hey! Where can I find that on/off switch so tiny? Thanks and congratulations, nice video.
Hello i have a Question. Not sure if this has been answer before But if all cells are fully charge can be from 12.6v up to 12.8v Wouldn't it hurt the Drill being it's only at 9.6v?
Good video as usual. How can I turn a 2.0AH Li-on battery into a 4.0AH or higher? That would save a fortune!
Thanks. that is exactly what i was looking for. I just want to ask you if it is possible to get a detailed scheme of wiring. Something like fritzing or so. Thanks a lot in advance.
great video. thanx dewalt would basically be the same , correct?