After I watched your video yesterday evening, I had two batteries that would not charge I done exactly like you showed it works flawlessly thank you young man, you made it simple and easy to understand thank you
Making use of the th-cam.com/users/postUgkxcJ22tnHH9l1vjdIdEIG27iOG55P7LXI8 reconditioning plan, I just saved 2 auto batteries from being completely junked. The guides were very simple to follow. I wish I would have found this years ago! You may use the guide to recondition any battery type
There's a dozen or more of these videos on TH-cam, and I was happy I went with this one. Cuts to the chase; doesn't require me to hack my Ryobi charger. $15 trickle charger was worth the investment to get three formerly dead Ryobi lithium batteries in play again. Thanks for posting.
I sometimes try these TH-cam videos to fix things and they very rarely work. However, this time, everything worked perfectly and I know absolutely nothing about electronics! VERY clear instructions and showed me exactly what to do. I have no idea how to actually use a trickle charger or a multimeter but with this video I was able to fix my Ryobi 18 Volt battery and, more importantly, impress my wife with the blinking green light!!! Thanks so much for a great tutorial. I wonder if that process works on other similar batteries too. Keep up the good work. You are the MAN!
Look at your battery case to see if it offers pos and neg terminal markings. I was able to charge my battery without removing the casing/cover. Worked like a charm... took less than 30secs of holding the clips on the terminals before I plugged it back in to the ryobi charger and it started charging as usual. Thx for the video!
Yeah, I've repeatedly put them on and off the charger to "rejuvenate", sometimes 10+ times before they start charging. Used to have them not charge all the time and would use that trick... but learned to not run them down till they're dead when in the tools and none go bad anymore.
Thank you young man I appreciate it I've got two of those batteries that died on me and I didn't know what I was going to do, when I seen the Harbor Freight charger come up the light bulb went off in my head an old dog can learn new tricks thank you son
Had a Ryobi 18v battery that died and wouldn't charge so I marked it bad and had planned on throwing it away. Before I got around to throwing it away a much newer battery did the same thing. I was thinking I would have to buy a couple of new batteries. I decided to do a search to see if anyone else had the same issue and I came across this video. Being a retired mechanic, I had everything necessary to try this process and it worked great. Took the batteries apart as shown in the video and used a small 12v charger touching the leads to the batter for only 1 minute. Both batteries are now charging great. Thank you for your video!
i am a ryobi fan and have 18v plus system batteries for a while and been replacing as they died, i assumed the batteries would no longer hold a charge or take a charge, your video is interesting and i will certainly give it a try, it gets expensive buying new 18v batteries , thank you for the tips
Great fix! I had a Ryobi 18V 3ah that just went out and you saved me $67! Works great again and I now know to keep a charge on them too. Easy once I had an T10 extention torx bit. Thanks for posting.
Thank you for the information. I had just bought a Ryobi cordless hedge trimmer from an elderly lady who had used it a couple of times but left the battery in the machine. Dead battery! Tried your method of repair and now its alive and well.
A little humor to this is I tried it your way and it worked, so easy your way. The humor or irony is I used my Ryobi impact driver and bits to fix my bad Ryobi battery. So, BIG thanks. Larry
Rather than a trickle charger I simply used another Ryobi 18v battery and connected it with a couple of handheld wires for 30 seconds... bingo, dead battery up to 12v and the charger recognises it instantly. Many thanks :)
Fantastic. I have six (6) P102 batteries that have all went dead. Going to get that charger and bring them back to life. Thanks for saving me much money
Worked for my battery !!! I had a battery that I couldn't "fix" by connecting to the visible terminal connectors... So I opened the battery, as shown in the video, and connected the charger directly to the internal batteries (thereby bypassing the electronics) and now, all is good.
Thank you. Good instructions . Nice and short. I tried to use my scooter battery charger and it did not work. Found out that it has safety features which prevented the boost. However I used a 12v random charger and was able to get it going. Now I have a working Ryobi battery.
this is better than most videos on this platform, but the key problem is that you should have a professional charger like the imax b6ac v2 and attempt to charge each individual cell that makes up the pack to its normal voltage. another thing to keep in mind is that although it might charge to full it could have bad cells which could be contributing to poor life. these individual cells would need to be replaced with ones of the same specs in order to prevent damage. as I said in the beginning this is a much better video than most and should work for many people. I would urge caution to inexperienced people who think that applying voltage is going to solve their problems. I have seen many things that are a safety hazard and many videos don't take safety as a priority. just to let you non electronics savvy people know that it's not so much the voltage that can kill you, but it is the amperage that will do it. most current above 100ma could be lethal! take extreme caution. if you don't feel comfortable, leave it to a professional.
I have a 1.5ah Ryobi battery that only charges to 2 bars instead of 4. Does that mean there's a bad cell needing to be replaced? So, the method shown here wouldn't help? Thanks.
Thanks a ton as I'm a heavy Ryobi user , drills , cordless and corded, saw, sheet metal saw , circular, multi tool and just about everything except the blower lol. But seriously I've got 1 battery exactly like the one you demonstrated on and 8 others ,so I'm just going use that hack and get it right back up. 🙏🎯👍
Worked for my Riobi.. I had left town for a few months, coming back to a dead battery .. (so, not overuse).. A quick boost from a working battery (1 minute connected) , and everything is working again.. Thank you.
It was a very good video. But I have two questions, 1 why do you have to take the battery apart, I didn't hear you say you needed to take them apart??? My second question is, can thus be done to a regular Ryobi battery, a no Lithium battery??? Again great video
Great video. I have four RYOBI "dead" batteries. Your video might just give them a new life. My plan is to use my trickle charger too. It's too bad that RIOBI, and others, don't have a way to prevent this from happening in the first place. But then they won't sell us new batteries thinking ours are trashed. I will be putting this video in my saved video folder.
it's because the bms has no way to determine if the pack just has a dead cell or if one is actually shot, and when they become overly discharged and the individual cells aren't balanced there's always a risk of overheating and fire, that's the real reason why it happens. just take care of you're batteries, keep them out of temperature extremes and keep them charged up but don't over charge them. most people just use their drill once in a while and don't keep their packs charged. hot and cold don't help either.
well done!!! one of my Ryobi 18v just went tits up the other day... $70 replacement at Home Depot is just not in the budget right now.. many thanks for this very informative fix-it video...
I had a Ryobi 18 V battery that sat in my garage for over 18 months that would not take a charge. The "Fix" was fast...easy & safe. I used my 12VDC trickle charger ..held the "+" & the "- " cables to the battery posts for slightly over 2 minutes. I then put the battery into the Ryobi battery charger. The charger "Testing" cycle ran a little longer than normal then it started the charging cycle ! I did not do any disassembly ...I didn't drill any holes !
Holy Cow!!! My "spare" battery has been dead for 4 years, and i thought i had a bad circuit board.... Now working again, thanks to your tip!!! By the way.... I bought one of those driver bit kits from Home Depot, and i use it alot in my electronics shop. I love it!
Thanks. Worked on PC18BXL (Porter Cable) that had the same type issue. Wouldn't charge. Have 2 units 3ah and 6ah. T10 opens but need a longer one on the 6ah.
Thank you so much, so any 12v battery maintainer can save the pricey battery. Wow, I will get one motormaster 12v 0.8a battery charger and maintainer to try
mic wang Ian just using it to bring the battery voltage up to a level , that way the on board chip can recognize its there. It doesn’t take much. Cheers
Thanks for watching I appreciate it! I’m curious too . my thoughts are they have a really good warranty on them so you are not tempted to break the seal! Can you imagine how many good batteries would be thrown away with out one in place? This is Very Bad environmental issue!
@@ATEMOFFROAD Right now I have four of these batteries that are "defunct". Oneif them useless than six months old but I cant prove it. I will try your method with great hope! If merely bringing the charge above a minimum threshold is all it takes to "repair" them, without some reasoning why this is dangerous, this looks to me like an artificial battery marketing program.
@@GaryBickford the battery you see in this video was less then six months old ! Now it’s still works like a charm and has not had an issue since! It beats having to manually sweep the porch, the ryobi battery is bad not the blower,Hope all goes well , good luck! Be safe and report back 👍🏼
First video that explains why the batteries will not charge and how to get it working again . I think that there is a low voltage shut off in the circuit board so that the batterys can only be discharged to a certain precent to protect the batterys , and then if the voltage drops even lower it will not connect to recharge .
@@ATEMOFFROAD I was going crazy figuring out every possible way to fix the problem. Since I don’t have the package it came in. Long story short. Reads defective. Appreciate the time taken to do this.
I just tried your solution and it worked! Thanks! But; why take the battery apart? Couldn't the same result be had by simply touching the charger leads to the + and - terminals on the battery?
I had a battery that I couldn't "fix" by connecting to the visible terminal connectors... I opened the battery and connected the charger directly to the internal batteries (bypassing the electronics) and all was good.
@ATEMOFFROAD Same here. My Stem reads 0.18 but my flat tabs read over 18V!!! Is there a way to fix this? I took apart two batteries just to test and the stem definitely read different and still cant charge. @davidrinaldis2351
What is the trick to removing the screws from the battery? I have been trying to use a Torx 10, and only one screw came out. The others seem too small for a T10, so I tried a T8, and still nothing. It almost seems like there is a little metal post inside the screw that will not allow the screwdriver to sink into the screw. Any ideas?
Thanks for the reply. I didn’t have one, so I used a screw remover bit on my corded drill to get them out. I purchased #4 5/8” metal screws to replace the tamper-proof screws. I was able to get both my batteries working with my trickle charger, so thank you very much!
my makita battery pack charged 1 times and with 24hrs the battery had drained. So i took apart the battery pack and recharged all the 18650 individually in a separate charger, 4 out of the 10 were .5v and most where 1.4v, so even the ones with .5v were able to charge up to 4.1v now im letting them sit for 48hrs to see how much they drop and hold a charge.
Old tech but worth trying first. Newer LiIon battery packs have active discharge limiters and pinouts that prevent their going flat but don't prevent charging current from passing to the cells.
The terminals at the top are what already read the charge and the circuit board is stopping it from charging in the first place. Bypassing it allows it to charge directly to a battery
I haven’t read all the comments, but do you think you can do it without taking the battery apart? Meaning hook the trickle charger to the positive and negative leads that would take the charge from the ryobi charger? I wasn’t sure if it was the BMS or the charger causing the issue.
I suspected it was the board and not the charger but some say it has worked the way you mentioned it! Also keep in mind you could have a bad cell , this is another reason why you would want to take it apart! Thanks for watching 🍻
Anyone have fix for this situation...7v on the external battery pack contacts, 19v across the actual internal batteries. The battery indicator only displays one LED and the charger says it's charged. I'm thinking about draining the batteries below 7V Ihen plug back into the charger to see what indication i get. Then maybe try the jump charge. Maybe the circuit board is bad on this one???
Thankyou for this very helpful vid but the 12v trickle charge didn't work for me though here is an alternative for anyone else stuck with the same issue. I have an 18v 5.0Ah pack that was down to 15v preventing any charge so the 12v would obviously be too low of a kick-start where I found a 19v (3.95A) laptop charger and connected it the same way to the neg and pos for 10mins till it got to about 19.5v then put it back together where I used the original charger to maintain it's nominal value of 20.2v.
@@ATEMOFFROAD I really envy you all that upload these helpful vids and I should do some of my own but I usually find what I am looking for and emphasis on that in the comments (hence yours) and give my appraisal.
excellent video, but i am confused as to the charger that you used. if you could explain further or point me in the direction as to where to find one.... thanks....Semper Fi.
All my new Ryobi tools use a different battery, in that the charger contacts are on the opposite end (and the bottom of) the normal battery insertion port for the tools. How this might effect overcoming a 'dead' battery scenario is a bridge I will cross when I come to it.
After I watched your video yesterday evening, I had two batteries that would not charge I done exactly like you showed it works flawlessly thank you young man, you made it simple and easy to understand thank you
That’s awesome! I appreciate the feed back and thank you for watching 🍻
I would listen to your thing about the batteries but I can't hear you you're too low what's the sense of listening if I can hear you
@@joeyoung2119 I am deaf - I watch TH-cam for hours a day, subtitles rock! Try it.
@@joeyoung2119turn your volume up
Making use of the th-cam.com/users/postUgkxcJ22tnHH9l1vjdIdEIG27iOG55P7LXI8 reconditioning plan, I just saved 2 auto batteries from being completely junked. The guides were very simple to follow. I wish I would have found this years ago! You may use the guide to recondition any battery type
It worked. I used the 12v battery on my motor mower, connected to the Ryobi battery with jump leads. Thank you. Very satisfying!
There's a dozen or more of these videos on TH-cam, and I was happy I went with this one. Cuts to the chase; doesn't require me to hack my Ryobi charger. $15 trickle charger was worth the investment to get three formerly dead Ryobi lithium batteries in play again.
Thanks for posting.
Thanks for watching 🍻
Thank you for saving an expensive battery. This was spot on!
I sometimes try these TH-cam videos to fix things and they very rarely work. However, this time, everything worked perfectly and I know absolutely nothing about electronics! VERY clear instructions and showed me exactly what to do. I have no idea how to actually use a trickle charger or a multimeter but with this video I was able to fix my Ryobi 18 Volt battery and, more importantly, impress my wife with the blinking green light!!! Thanks so much for a great tutorial. I wonder if that process works on other similar batteries too. Keep up the good work. You are the MAN!
Wow, this very nice! thank you for watching, I really appreciate it. Cheers!
You seriously just saved me $60. Thank you!
Look at your battery case to see if it offers pos and neg terminal markings. I was able to charge my battery without removing the casing/cover. Worked like a charm... took less than 30secs of holding the clips on the terminals before I plugged it back in to the ryobi charger and it started charging as usual. Thx for the video!
Thanks for sharing and watching 🍻
Yeah, I've repeatedly put them on and off the charger to "rejuvenate", sometimes 10+ times before they start charging. Used to have them not charge all the time and would use that trick... but learned to not run them down till they're dead when in the tools and none go bad anymore.
I've got two old Ryobi 12 volt batteries that won't charge. I was gonna throw them away, but I will try this trick. Thanks. Cheers from eastern TN
i went and bought the harbor freight charger and it worked like a charm i was really excited thx again
Thank you young man I appreciate it I've got two of those batteries that died on me and I didn't know what I was going to do, when I seen the Harbor Freight charger come up the light bulb went off in my head an old dog can learn new tricks thank you son
I hope it works out successful for you! Thanks for watching I appreciate it. Cheers 🍻
Thank you. I'm off to Harbor Freight to pick up 12v trickle charger. You saved me cash on new Battery.
Nice , it worked for you too,. Thank you cheers
Had a Ryobi 18v battery that died and wouldn't charge so I marked it bad and had planned on throwing it away. Before I got around to throwing it away a much newer battery did the same thing. I was thinking I would have to buy a couple of new batteries. I decided to do a search to see if anyone else had the same issue and I came across this video. Being a retired mechanic, I had everything necessary to try this process and it worked great. Took the batteries apart as shown in the video and used a small 12v charger touching the leads to the batter for only 1 minute. Both batteries are now charging great. Thank you for your video!
Awesome , thanks for watching 🍻
Great post, worked like a charm. Just think of all the people that ran out and bought new batteries, when all it was was a crappy PCB set up. 👍
i am a ryobi fan and have 18v plus system batteries for a while and been replacing as they died, i assumed the batteries would no longer hold a charge or take a charge, your video is interesting and i will certainly give it a try, it gets expensive buying new 18v batteries , thank you for the tips
It’s definitely worth trying, but those batteries do fail over time , so do consider that a cell could be bad. Thanks for watching 🍻
Great fix! I had a Ryobi 18V 3ah that just went out and you saved me $67! Works great again and I now know to keep a charge on them too. Easy once I had an T10 extention torx bit. Thanks for posting.
Glad I could help
Wow, worked great. Hardest part was finding the right torx bit.
Thank you for the information. I had just bought a Ryobi cordless hedge trimmer from an elderly lady who had used it a couple of times but left the battery in the machine.
Dead battery!
Tried your method of repair and now its alive and well.
Awesome find and save 🍻🍻
A little humor to this is I tried it your way and it worked, so easy your way. The humor or irony is I used my Ryobi impact driver and bits to fix my bad Ryobi battery. So, BIG thanks. Larry
Reasonably new battery brought back to life. Works perfectly. 10 minutes. Thanks!
Rather than a trickle charger I simply used another Ryobi 18v battery and connected it with a couple of handheld wires for 30 seconds... bingo, dead battery up to 12v and the charger recognises it instantly. Many thanks :)
Excellent!! Cheers
Fantastic. I have six (6) P102 batteries that have all went dead. Going to get that charger and bring them back to life. Thanks for saving me much money
Gary Leahy nice , I appreciate it, thanks for watching
Worked for my battery !!! I had a battery that I couldn't "fix" by connecting to the visible terminal connectors... So I opened the battery, as shown in the video, and connected the charger directly to the internal batteries (thereby bypassing the electronics) and now, all is good.
Thanks for watching, I appreciate it 🍻
Thank you. Good instructions . Nice and short. I tried to use my scooter battery charger and it did not work. Found out that it has safety features which prevented the boost. However I used a 12v random charger and was able to get it going. Now I have a working Ryobi battery.
this is better than most videos on this platform, but the key problem is that you should have a professional charger like the imax b6ac v2 and attempt to charge each individual cell that makes up the pack to its normal voltage. another thing to keep in mind is that although it might charge to full it could have bad cells which could be contributing to poor life. these individual cells would need to be replaced with ones of the same specs in order to prevent damage. as I said in the beginning this is a much better video than most and should work for many people. I would urge caution to inexperienced people who think that applying voltage is going to solve their problems. I have seen many things that are a safety hazard and many videos don't take safety as a priority. just to let you non electronics savvy people know that it's not so much the voltage that can kill you, but it is the amperage that will do it. most current above 100ma could be lethal! take extreme caution. if you don't feel comfortable, leave it to a professional.
I have a 1.5ah Ryobi battery that only charges to 2 bars instead of 4. Does that mean there's a bad cell needing to be replaced? So, the method shown here wouldn't help? Thanks.
Brilliant!!! I now have to see if I can get my 2 batteries back serviceable. Thanks for the info. 😉😉👍👍
I tried this today and it worked perfectly !! Thank you !
That’s awesome, thanks for watching 🍻
Great for a one time fix. I wouldn't want to do this after it quits the second time. Thankx
Absolutely by that time it’s best to properly discard 🍻
Thanks a ton as I'm a heavy Ryobi user , drills , cordless and corded, saw, sheet metal saw , circular, multi tool and just about everything except the blower lol. But seriously I've got 1 battery exactly like the one you demonstrated on and 8 others ,so I'm just going use that hack and get it right back up. 🙏🎯👍
Very cool! Thanks for watching! I appreciate it!
Thanks man.... you helped me fix TWO things with your vids (vacuum), keep sharing your stuff.... from ireland.
Thanks for watching
Thanks for the video. I used my car battery charger on the maintenance setting. It worked.
Excellent! Good idea
Thanks that was my next question.
Thank you very much, exactly the same problem, and with your help problem solved My hero
I'm so glad I found this video, thanks for pointing me in the right direction 😮😊
Worked for my Riobi.. I had left town for a few months, coming back to a dead battery .. (so, not overuse).. A quick boost from a working battery (1 minute connected) , and everything is working again.. Thank you.
Edward Pinsent 💥 nice , thanks for watching and letting us know it worked for you! I really appreciate it! Cheers! 👋
Best video on how to do this on youtube!
Thanks for watching I appreciate it! Cheers
Holy shit bro!!! I just saved a battery thanks to you.
Thumbs UP!!!
Nice 👍🏼 Thanks for watching!
It was a very good video. But I have two questions, 1 why do you have to take the battery apart, I didn't hear you say you needed to take them apart??? My second question is, can thus be done to a regular Ryobi battery, a no Lithium battery??? Again great video
Thanks for the tutorial, p190 , revived
Great video, saved me from having to go and buy another battery. Thanks!
Awesome thanks for watching
Great video. I have four RYOBI "dead" batteries. Your video might just give them a new life. My plan is to use my trickle charger too. It's too bad that RIOBI, and others, don't have a way to prevent this from happening in the first place. But then they won't sell us new batteries thinking ours are trashed. I will be putting this video in my saved video folder.
Thanks for watching I appreciate it 🍻
it's because the bms has no way to determine if the pack just has a dead cell or if one is actually shot, and when they become overly discharged and the individual cells aren't balanced there's always a risk of overheating and fire, that's the real reason why it happens. just take care of you're batteries, keep them out of temperature extremes and keep them charged up but don't over charge them. most people just use their drill once in a while and don't keep their packs charged. hot and cold don't help either.
I've fixed batteries by putting them in my freezer overnight and YES it works.
That’s awesome! thanks for watching
well done!!! one of my Ryobi 18v just went tits up the other day... $70 replacement at Home Depot is just not in the budget right now.. many thanks for this very informative fix-it video...
Thanks for watching 🍻
I had a Ryobi 18 V battery that sat in my garage for over 18 months that would not take a charge.
The "Fix" was fast...easy & safe.
I used my 12VDC trickle charger ..held the "+" & the "- " cables to the battery posts for slightly over 2 minutes.
I then put the battery into the Ryobi battery charger.
The charger "Testing" cycle ran a little longer than normal then it started the charging cycle !
I did not do any disassembly ...I didn't drill any holes !
That’s awesome, I’m glad it worked out for you! Thanks for watching 🍻
Holy Cow!!! My "spare" battery has been dead for 4 years, and i thought i had a bad circuit board.... Now working again, thanks to your tip!!! By the way.... I bought one of those driver bit kits from Home Depot, and i use it alot in my electronics shop. I love it!
Rusty The Raver very cool !
Great job dude ! work perfectly for me too. Thanks from France
You should always clip the positive terminals before ground. Great video though. I’ll try it!
this got you a new subscriber, great work , nice chapters
this links broke Buy 12v charger here
THAT'S AMAZING! Saved me $54.
Sweet , thanks for watching
Worked like a charm. THANK YOU!!
Works Great! $9.99 From Harbor Freight and 20 min. labor
Great video thank you. Guess what I'll be doing in the morning?
💥 nice, thanks for watching, I think your fixing batteries, haha cheers!
Thanks for the information. I have one that won't charge so I'm going to try it out.
@Edwin Leach 💥 nice, thanks for watching!
Thanks. Worked on PC18BXL (Porter Cable) that had the same type issue. Wouldn't charge. Have 2 units 3ah and 6ah. T10 opens but need a longer one on the 6ah.
Thanks for sharing and watching 🍻
This worked like a treat, thanks for the fix
Thank you so much, so any 12v battery maintainer can save the pricey battery. Wow, I will get one motormaster 12v 0.8a battery charger and maintainer to try
mic wang Ian just using it to bring the battery voltage up to a level , that way the on board chip can recognize its there. It doesn’t take much. Cheers
Excellent info, both how-to and what the problem is. I'm curious about their justification for not having at least a 'recovery mode'!
Thanks for watching I appreciate it! I’m curious too . my thoughts are they have a really good warranty on them so you are not tempted to break the seal! Can you imagine how many good batteries would be thrown away with out one in place? This is Very Bad environmental issue!
@@ATEMOFFROAD Right now I have four of these batteries that are "defunct". Oneif them useless than six months old but I cant prove it. I will try your method with great hope! If merely bringing the charge above a minimum threshold is all it takes to "repair" them, without some reasoning why this is dangerous, this looks to me like an artificial battery marketing program.
@@GaryBickford the battery you see in this video was less then six months old ! Now it’s still works like a charm and has not had an issue since! It beats having to manually sweep the porch, the ryobi battery is bad not the blower,Hope all goes well , good luck! Be safe and report back 👍🏼
Worked for me. Thanks
I lost one battery unnecessarily a while ago, so this is definitely worth a try to save another one that ow doesn't charge.
Awesome, dude! Thanks for the tutorial. Got 2 batteries repaired this way, trying on another brand now too. Appreciate ya!
Welcome to the channel, thanks for watching 🍻
It works! Thanks for sharing.
Thank you 🍻
Outstanding video.
First video that explains why the batteries will not charge and how to get it working again .
I think that there is a low voltage shut off in the circuit board so that the batterys can only be discharged to a certain precent to protect the batterys , and then if the voltage drops even lower it will not connect to recharge .
I totally agree, thanks for watching
Thanks I just watched a video where they drilled holes instead of just removing screws. Facepalm moment. Thanks for the video 👍
Thanks for watching
Nice video and great info.
Good stuff. Thanks for the info. Now let’s see if I can charge mine.
Thanks for watching
@@ATEMOFFROAD I was going crazy figuring out every possible way to fix the problem. Since I don’t have the package it came in. Long story short. Reads defective. Appreciate the time taken to do this.
I just tried your solution and it worked! Thanks! But; why take the battery apart? Couldn't the same result be had by simply touching the charger leads to the + and - terminals on the battery?
I had a battery that I couldn't "fix" by connecting to the visible terminal connectors... I opened the battery and connected the charger directly to the internal batteries (bypassing the electronics) and all was good.
No cause you need a quick voltage jump direct to batts, "around" circuit control board.
Using visible terminals wont do that
Slightly different problem. Battery reading fine (18V) on flat tabs inside but on the "tower" it is only reading 5.6-5.7V. Any ideas?
Same here
@ATEMOFFROAD Same here. My Stem reads 0.18 but my flat tabs read over 18V!!! Is there a way to fix this? I took apart two batteries just to test and the stem definitely read different and still cant charge. @davidrinaldis2351
4:39 Why didnt your volt meter read -13.33v, as u had the probes the wrong way around?
Because the leads were correct, during the voltage test on the power supply side leads. 🍻
@@ATEMOFFROAD Oh, I see. You have a crocodile clip with both red and black on each handle. That's a smart thing to do.
@@TassyDeval yeah the one side has black and red the other all red
Great video. I'm having trouble finding a small trickle charger like yours in the UK. Can anyone out there help?
You can use a regular 12v battery or a power supply. The one I used is just a 12v trickle charger 🍻
I am interested in your Battery Charger, (the automotive one), but the Amazon link is not working. Can you provide more info on that charger? Thanks!
This one is very similar amzn.to/42T0sUU 🍻
I will that a try!! Thanks
thank you it worked !
Perfect tutorial thanks!!
Thanks i try this procedure to my old batteries
This procedure is for newer batteries not older. Those cells may actually be bad . Discard battery properly.
great info! how about some volume.
Awesome video - thank you
do you have to open the battery housing to charge it? can't you just charge the battery from the top with the negative and positive side post.
I don’t think so, but you can try! Thanks for watching! Cheers
What is the trick to removing the screws from the battery? I have been trying to use a Torx 10, and only one screw came out. The others seem too small for a T10, so I tried a T8, and still nothing. It almost seems like there is a little metal post inside the screw that will not allow the screwdriver to sink into the screw. Any ideas?
that screw you describe would be a safety torx bit which should be in the screwdriver set
Thanks for the reply. I didn’t have one, so I used a screw remover bit on my corded drill to get them out. I purchased #4 5/8” metal screws to replace the tamper-proof screws. I was able to get both my batteries working with my trickle charger, so thank you very much!
@@mcamoeba23 glad to help out thanks for watching 🍻
I dont have a trickle charger. Can i use my power bank that can jump start a car?
It works. 👍
my makita battery pack charged 1 times and with 24hrs the battery had drained. So i took apart the battery pack and recharged all the 18650 individually in a separate charger, 4 out of the 10 were .5v and most where 1.4v, so even the ones with .5v were able to charge up to 4.1v now im letting them sit for 48hrs to see how much they drop and hold a charge.
Thank you it worked !!
Old tech but worth trying first. Newer LiIon battery packs have active discharge limiters and pinouts that prevent their going flat but don't prevent charging current from passing to the cells.
Thanks a lot sir .
Thank you for the tip.
Why do you have to take the cover off the battery? Can't you just attach the alligator clips to the terminals on the stem?
Because you're bypassing the circuit board that controls the charging and has been stopping it from charging. He does say that.
The terminals at the top are what already read the charge and the circuit board is stopping it from charging in the first place. Bypassing it allows it to charge directly to a battery
Thank you for sharing this! It Worked!
Thanks for watching I appreciate it
I haven’t read all the comments, but do you think you can do it without taking the battery apart? Meaning hook the trickle charger to the positive and negative leads that would take the charge from the ryobi charger? I wasn’t sure if it was the BMS or the charger causing the issue.
I suspected it was the board and not the charger but some say it has worked the way you mentioned it! Also keep in mind you could have a bad cell , this is another reason why you would want to take it apart! Thanks for watching 🍻
Anyone have fix for this situation...7v on the external battery pack contacts, 19v across the actual internal batteries. The battery indicator only displays one LED and the charger says it's charged. I'm thinking about draining the batteries below 7V Ihen plug back into the charger to see what indication i get. Then maybe try the jump charge. Maybe the circuit board is bad on this one???
Thankyou for this very helpful vid but the 12v trickle charge didn't work for me though here is an alternative for anyone else stuck with the same issue. I have an 18v 5.0Ah pack that was down to 15v preventing any charge so the 12v would obviously be too low of a kick-start where I found a 19v (3.95A) laptop charger and connected it the same way to the neg and pos for 10mins till it got to about 19.5v then put it back together where I used the original charger to maintain it's nominal value of 20.2v.
Nice 👍🏼 just needed a few More volts to get the charger to recognize the battery 🔋 way to adapter! Thanks for watching
@@ATEMOFFROAD I really envy you all that upload these helpful vids and I should do some of my own but I usually find what I am looking for and emphasis on that in the comments (hence yours) and give my appraisal.
When I plug in the trickle charger, it is giving no power. Any ideas?
excellent video, but i am confused as to the charger that you used. if you could explain further or point me in the direction as to where to find one.... thanks....Semper Fi.
It’s just a small 12vdc trickle charger, this one I picked up at harbor freight for 8 bucks. Thanks for watching 🍻
how about when the stack has no power, but the run of batteries reads 18? I would assume board is dead
That makes sense 👍🏼🍻
Thanks.
I think when you disassemble a battery you should use a battery screw driver ?
works like a charm!!!
All my new Ryobi tools use a different battery, in that the charger contacts are on the opposite end (and the bottom of) the normal battery insertion port for the tools. How this might effect overcoming a 'dead' battery scenario is a bridge I will cross when I come to it.
will a car battery 12v work to charge my ryobi?
Yes
How about hitachi batteries the numbers differ hitachi 12v HX2 BCL1015 10.8V/12VPEAK