You are a genius. Just revived my Ryobi battery using my portable jump starter battery. Held the red clamp to red and the black to the other side of the battery as shown in the video. After 30 sec, still low voltage, 30 sec more, 3.8V across the battery, still shows defective on the Ryobi charger, 1 minute more on the jump start battery, 9.2 V across the Ryobi battery, plugged into the Ryobi charger and it flashes green. Thanks.
I have had a problem with the Ryobi charger, and I blamed the batteries. So I bought Dewatt set which is tradesman quality. It was only when I went to the Ryobi seller and discussed it, he invited me to bring the Ryobi batteries and charger into the shop. When we tried the charger in the store, it worked with my batteries showing my charger was faulty. So now I have 2 working Ryobi and 2 Dewatt chargers. So if a problem with charging, do not automatically assume it is a battery issue. We can often find Ryobi and Dewatt in second-hand tool stores quite cheaply so to get additional chargers, I took good batteries into the store and requested I test the chargers before buying. Another problem here is that the Ryobi importer will not supply spare parts. For tools like chainsaws, lawn movers, etc, service and repair shops won't touch them. When I asked what we do if not under warranty and need a small repair, I was told we buy a new one. This is highly unsatisfactory as for DIYers, we often don't use some tools that often. So if buying such tool sets which lock us in with batteries which aren't exchangeable with other brands, I have learned to make some inquiries first.
Watched a different video on this issue, man. I have to say your simple way of getting down to the point is what I liked. Got all the info I needed quick and easy. Thanks
Was looking for a solution as there was no light on my Ryobi battery! 2 minutes after watching this video the battery was charging. Fantastic video and so easy to follow. Thanks for the upload!
You rock! I already got my new battery with the warranty, but this worked getting the dead one back up and running! I used my trickle charger to get the battery to 10%, then plugged it into the charger and it charged right up! Thanks for the simple how too!
No need to disassemble battery. Simply attach leads of trickle charger to exposed contact points with a wood clamp. Left on ten minutes. Placed in normal charger and perfect. Thanks for idea!!!
@@DannySteel18 That may be true some of the time or perhaps even most of the time. But I did not disassemble my battery and I was able to revive it as described above. Saved me time and effort.
On the charger and charging! Thanks for the info. Yup, I believe the disassembly is required to bypass the board, which is what was preventing any charging in the first place. Once the leads were hooked, the charge quickly went from 11V to 17.5V, when I stopped it and plugged it into the charger.
Marvellous! I had a battery that the Ryobi battery charger showed as faulty. Took the cover off as per your video, hitched up a car battery charge to it for twenty minutes (filling the battery to 12 volts) and put it in the Ryobi battery charger. The battery is now charging up. THANK YOU!
Thank you! In the course of 1 hr I recovered a Ryobi, 18V, Dewalt 18V and a Black & Decker 40 V. I probably would have gotten new tools instead of batteries for the DeWalt and B&D since they are 10+ years old. 3 of the B&D were dead. So you saved me more than the cost of the batteries because I would have just replace the tools.
Worked!....Thanks!....I just taped 2 small wires to my good battery and held it on for 20 seconds and it went from 2v to 10v and then it started charging. And yes, you must remove cover on dead battery because anything under 5/6v will not show/read on upper stem. Thanks
I tried it first without taking it apart for 10 min, it didn't work. Took it apart, used your method with direct charge for 1 min- BAM, WORKED. Thank you ☺️
:oltage bump has to be done on the battery side of the bms charg / discharge circuit. CAUTION Only for a few seconds at a time. Check with a voltmeter usually needs overv 10 vdc. To charge If stubborn give it 3/5 seconds, check voltage, wait then try again. If to much for too long you may get heat, damage and fire.
Worked like a charm I used a 12v automobile battery charger (lowest setting at 2A)...took about 5 secs at the terminals to bring it back to detectable voltage. Thanks
Thank you for the video, it worked for my battery (had to bring it back to 12V for the charger to recognize it) !! If (like me) you don't have a trickle charger but have another functioning (and charged) 18V Ryobi battery, take it apart as well and connect the + and - of the functioning battery to the + and - of the defective one
Good looking out, man! It worked. Wish I would've known this before I got rid of a lot of batteries before but I'm glad to know this now. I saved 1 battery today, THANKS. Have a blessed day
This way worked beautifully. Tried without taking the battery apart but didn't work. Then finally did but instead of a trickle charger I used a known good battery and jumped it. Charging rn! Thanks bro!
Well sir after much messing around with trying to get one of the 3 dead batteries open that I have I was able to get the first one I got open charged enough to be recognized by the charger and start flashing green for charging. Thank you for this post you have saved me at least $40.
Totally worked. Used my Dell laptop charger (18.5V output) for about 20 seconds and it upped the Ryobi P102 voltage from 4.7V to 7.2V which allowed the charger to start charging again. This was especially good since my battery was still under warranty and they wouldn't be able to ship me a new one for a month and a half! BTW, Harbor Freight has a security bit set for a nominal cost.
Nice worked! I just connected a old 18v battery charger by splicing the wire and connecting it directly to the battery cells for a minute and it started charging.
You da man Bearded one. Tried first with a trickle charger and I was too impatient. The voltage on the Ryobi 18v battery seemed to be just going lower. I then hitched up the dead Ryobi to a 12v car battery with ~12.5v of charge. I left it on for 10 minutes and viola..... the green light started flashing. Many mahalos from the Big Island of Hawai'i. Saved me more like $70 (they have gone up in price a bit, go figure)
Thank you for this video. I had a 3ah that wouldn't charge, followed the instructions and successfully revived it. Like your's initially it wouldn't take the charge but I slid around my connections a couple times and was able to get a zap that was enough to get it charging again.
It work very well thanks, I had another battery @ 17v pigtails to it for a few seconds and slipped the cover back on a plugged it in and started charging on the oem charger.
Had the same exact problem. Worked perfect. Just a FYI don’t use the positive and negative on the stem part. Use the positive and negative on the base off the battery where u has two flat spots diagonal from wachother
Thanks for stating not to use the stem connectors to revive the batteries.. bc that was my main question while watching this video an luckily I didn't have to scroll thru comments that far to find my answer..
But how is it they claim you can put the battery in the charger for a bunch of very short periods to slowly get it back above the sleep mode level but yall say I can use those terminals to shock the battery back above that level??
@@danafaulhaber334 I’m not sure. I’ve never been able to make it work by just taking it on and off the charger fast. I would try that first and if that doesn’t work check the warranty. But if you are past the warranty give this a try
@@TheBeardedJeeper thanks for the response.. yea that whole 2 second in out in out bs is a pain an ive seen claims it could take up to a half hour for that method to work.. an after watching other videos after this 1 think its prolly better to take it apart to give it a Jumpstart so then its possible to check each individual battery instead of only being able to check the system as a whole.. Thanks again Bearded Jeeper for a quick response..
This actually worked. I touched 12v dc power to each battery. Brought each cell up to about 2v. Then plugged the battery in and now its charging. It hasn't worked for 3 years. Just make sure you check the + - on each cell. Touch 12v to each cell individually for just 5 seconds each.
Yep! Too far below charging recovery.. I hated that! I was sick of fixing em so I ended up ditching Ryobi all together. Great video bro. And yes.. if you break the seal it voids the warranty. Lol
@@TheBeardedJeeperthanks for taking the time to make the video. Here is my question, I let my charger sit out in the rain last night and I discovered it this morning, I blew it out with my air compressor and let it sit for about an hour and then I plugged it in and I get a solid red light but none of the Ryobi batteries I put in there causes it to go from red to blinking. I thought it might be a fuse but then if there's a blown fuse why is there a solid red light and I know all four of my batteries aren't bad at the same time and they were not left out in the rain anyway. I have five or six trickle chargers that are 6-volt 12 volt which I guess I referred to as battery tenders you think they would put the adequate charge into the battery? I'm really not sure what the output is on the standard Ryobi single port charger
Hi pal, good vid. I have 18v ryobi battery that isn't powering anything but shows green (charged) on itd charger. Is it worth trying your hack or is it a different problem? Cheers.
Worked perfectly for me. 30 year old car battery trickle charger for 30 seconds. Had to slightly drill out one of the security bit holes on the battery. They'd added some plastic to the hole to keep it from being disassembled.
Great video. I was prepping to do this. Just by chance I shook the charger with the battery in place and it started charging. Obviously not the same problem but worth a shake.
PSA: deep discharge and subsequent charge of lithium batteries can lead to fire. Act accordingly. I've found the Ryobi batteries will kill themselves if not fully seated in the charger. Also do not continue using them once they start to slow down, swap or charge. That will prevent the voltage from getting too low to charge safely. You can also buy new 18650 batteries and replace them. Did that to a old pack and it's better than new, since battery capacity has grown significantly in recent years. 👍
0:50 I think that ryobi charger kills ryobi batteries. I’ve had a few batteries I’ve put on to charge, they charge fine for a few minutes, but I come back hours later and it’s flashing and the batteries don’t work.
That happens when the total cell voltage is high enough to initiate charging (green light) but then the pack is detected as not accepting a charge properly. Therefore the charger terminates the charging process, creating the red lights. That situation is caused when one or more cells in tbe pack hsve failed, and the charger deliberately stops charging them to ensure that there is no chance of fire, etc. So, the battery pack is failed and the charger is NOT what killed it. You can replace the cells and create a refurbished pack, but its a lot of work and can be costly because you must use 5 or 10 matching cells (you cannot just replace one faulty one). You also have to use so-called "high amperage" cells that are suitable for power tools, you cant just use any old laptop 18650s. You need to check the specs of the original cells and make sure you replace with cells of equal or higher "maximum amps current" - the 5 cell packs need higher rated cells than 10 cell packs.
the poles on top do not work thats why the charger doesn't charge your battery when it gets too low it is a safety feature it wont charge it so you have to give it a boost
Thank you for the Video. The hardest part is once the battery is charged and used again one has to this method again and again? Any idea how to overcome this situation???
Nope you shouldn’t have to do it again like this. It’s only when the battery gets too low that the charger doesn’t recognize it so you give it a little jolt. It’s a safety feature.
Thank you, this worked for me! My big battery a P05 now is charging. it looks like there are 6 small cells inside the battery so i did touch the red (+) to two separate leads for about a minute each and that was enough to get it to charge using the ryobi charger. (When I charged only the first point it didn't work.). FYI i used a trickle charger 800ma battery tender jr. I used a small piece of speaker wire as my leads. i dont have a voltmeter so i just used 30 second timer and then tried it. Took me 4 tries but it worked.
I know one thing that causes this problem. When your tool stops do not try to use it even a bit more. Stop what you are doing and change or recharg that battery, like thebman said if the battery volltage gets below what the battery management system (BMS) allows . You wiill have to do this trick to get it back over the charging threshold. Charge your bathroom teries more often and pay attention to those with the built in level meter. MY 2 CENTS. good vid!
My P108 has in one corner a "plug" where a screw might have been. How do I tackle this corner? Also I removed two screws but the 3rd is stripped. So I only freed up two of the corners. WHat do you think?
@@TheBeardedJeeper No I used a torque but it was one size too large or small the head must be soft metal ,,, then when I found the correct size the other two came out easily ... ok will pop the "cover" off ... if I can remove 3 of the 4 screws maybe I can pry that lid apart
I bought a drill last week and love it but the battery charged once then played up. I watched your vid then inspected the contact points in the charger. I bent them out a little and viola. Problem fixed. Don't bend them too far or they will hit the battery as it comes in contact and fold up beneath the battery... because they are shite metal.
Four year later and I found that this works as long as it only low battery but I suggest that u buy a harbor freight 12V trickle charger that seen to work the best and safest it only put in .75 V. I didn't use spare wires the small clamps in place for 30sec at a time about 3m minutes in total before my charge started charging the battery , good luck and be safe
So I just got a couple newer Ryobi 18v 4ah batteries off FB marketplace & I bought them knowing they were “defective”.. when I test w/ multimeter, one shows 131 m V & the other shows 163 m V.. I haven’t been able to find anything about this type of issue.. any ideas/suggestions would be greatly appreciated!
You can jump individual cells in the pack using a second (known good) battery. Using jumper wires with alligator clips, jump a single cell that is low in charge to a known good cell on the good battery. MAKE SURE YOU ARE CONNECTED USING PROPER POLARITY!!! (Positive to Positive, Negative to Negative) Use a digital voltmeter to keep measuring the voltage of the "low cell". When it reaches approximately 4v, do the same for any other low cells (but make sure you jumper to a different cell on the known good battery so as not to drain that cell too far. Once all of the cells on the bad battery are over 4.001v, you can then put the battery in the battery charger and it will then charge it. NOTE: Each cell can take a few minutes to charge up to 4v, so make sure you keep it jumpered long enough to get the cell's voltage above 4.001v. I had a P107 battery (showing only 2 LED lights after the charger said it was fully charged) with one of the cells at 3.5 volts and all of the others were above 4v. Using this method allowed the battery to take a full charge again and showed 4 LED lights again.
I know you said 30 seconds. Using a meter, I found out that if the battery comes back less than 8 volts, it's not going to charge. The ones I had were in the 5 volt range and one was at 3. I connected my trickle charge to them, the ones in the 5 volt range took several minutes to get up to that 8 volt area. I monitored it with my meter and could watch the voltage climb. The other one that was at 3, it climbed very slowly but left it over night. This morning, it was at 9 volts and I put it in the Ryobi charger and it's doing its thing, blinking green. I've got one more to go (had a total of 3 of the P102 batteries)
Mine remains a mystery. It is a 4AH Lithium Ryobi battery. I topped it off to get 19.7 Volts at the batteries and at the terminals, but when I press the drill's trigger, the voltage at the contacts goes from 19.7 to zero while the batteries themselves remain at 19.7 V. So the twitching circuit in the battery pack is going open circuit upon the drill loading it. Do these suckers have a counter that times out and renders the battery pack useless? Is there there some other system involved in operation?
Worked like a charm! Except i don't have a trickle charger and didn't want to drop the cash on one just for this, so i used an old 18v laptop power brick from my spare parts bin.
thank you for pointing out the hole in the T10 security tip. I cannot use a T10 tip that I have, and I know why now. This hopefully will avoid the other solution of drilling a hole in the case to recharge
Thanks for the video, man. When I measure the voltage using the external positive and negative it reads 6.9V but when I open it up and measure the voltage on the internal positive and negative, I get 19V. Do you think there is a different problem I’m having? Thanks.
You have to take it apart when the battery gets too low it doesn’t let you charge it normally as a “safety” feature. You have to give it the juice right to the board itself.
In the user manual it says of the battery charger is blinking red it could be because the battery is deeply discharged and to simply leave it on the charger and it will eventually charge.
Awesome glad it worked for you. I think I explained in the video that the plug is your warranty. If you take the plug out it voids any warranty you had on the battery.
I am not 100% sure I think it might be part of the thing that won't let it charge if it is a low voltage. taking it apart and putting the charge right to the battery cells seems to do the trick
Thanks for this video. Very straight and to the point. One comment I read said that Harbor Freight has a security bit set to remove the retaining screws. Could you please give me that part number? Would it also be available at AMAZON?
Thanks for your reply. I like reading them. I finally found a set at Harbor Freight. Are those companies that use them trying to tell us DIY people something?@@TheBeardedJeeper
I charged the batteries directly with a power supply and got 19.4V at the internal terminals. However, the external tabs still show 0V. Is there a way to reset the safety circuit to get it to work?
I have exact same issue as well and can't seem to find much online regarding this. Super annoying, I think must be faulty BMS as I've attempted to reset it by placing a charge as well as a load on the main terminals on the top of the pole, as that's typically how you reset a BMS. Did you ever find a solution to this problem? Anyone?
What is it for? 24 volt may be different I’m not sure. But saw your other comment they don’t make them anymore? Is there a version that you can buy new? I would think the same kind of process would work just not sure since I’ve never done it
They don't make 24v for anything I have 2 string trimmers and 2 charger ports for 24v but now it's 18v or 40v so I have to buy new trimmers but they say it's a kit so I will buy it I can't open the 24v battery I don't have the right tool to get the 4 screws out
I thought this video was also very helpful and purchased these items on Amazon. Ryobi P102 Battery Repair ua-cam.com/video/XYiukKFXg84/v-deo.html. Let’s see how it goes.
Mine blinks red then green like is charging then after a few seconds it stops and changes to a solid green showing that it's charged so I try it in the drill but it doesn't work do you have any idea why?
My battery takes a charge, but only for like 5 minutes, then when I use it, it dies after a few minutes. I'm thinking one of the cells is faulty. I was thinking about replacing all the 5 cells with new 18650 batteries?
Jim Davy awesome! Glad it could help you out. I’ve had a pretty good success rate with it too only a few older ones I couldn’t get to work. Thanks for watching
@@TheBeardedJeeper I had the success with a P189, 5 cell pak. All the cells showed about 0.30 volts. Then I tried a P108, 10 cell. Four of the groups showed 3.6 volts. The 5th showed about 0.75 volts. I tried to charge the individual group. That did not work.
The answers simple keep them topped up all the time ... never let them drop off . They use a drop out circuit in the charger section and this is how it refuses to pick up on charging ..😀
Casey 250 haha thanks man. Yeah I would normally but they are like $40 a battery and this only takes a few min. I have had several of their batteries do this. If I could afford it I would switch to Milwaukee the fuel line is amazing
Typically if they're showing full charge but don't work what I've found by trasing back circuits is typically there is a ground circuit were connection severed somewhere a few ways to fix it if handy with A soldering iron and Volt meter one should be able to figure it out. If it's worth time spent on it or just wanna Tinker with it
![RYOBI 18V Battery Not Working? [Easy DIY Charging Hack]](http://i.ytimg.com/vi/sqeiOkSNRsU/mqdefault.jpg)
![RYOBI 18V Battery Not Working? [Easy DIY Charging Hack]](/img/tr.png)
You are a genius. Just revived my Ryobi battery using my portable jump starter battery. Held the red clamp to red and the black to the other side of the battery as shown in the video. After 30 sec, still low voltage, 30 sec more, 3.8V across the battery, still shows defective on the Ryobi charger, 1 minute more on the jump start battery, 9.2 V across the Ryobi battery, plugged into the Ryobi charger and it flashes green.
Thanks.
Jim Harper awesome man glad it worked for you!
I have had a problem with the Ryobi charger, and I blamed the batteries. So I bought Dewatt set which is tradesman quality. It was only when I went to the Ryobi seller and discussed it, he invited me to bring the Ryobi batteries and charger into the shop. When we tried the charger in the store, it worked with my batteries showing my charger was faulty. So now I have 2 working Ryobi and 2 Dewatt chargers. So if a problem with charging, do not automatically assume it is a battery issue. We can often find Ryobi and Dewatt in second-hand tool stores quite cheaply so to get additional chargers, I took good batteries into the store and requested I test the chargers before buying.
Another problem here is that the Ryobi importer will not supply spare parts. For tools like chainsaws, lawn movers, etc, service and repair shops won't touch them. When I asked what we do if not under warranty and need a small repair, I was told we buy a new one. This is highly unsatisfactory as for DIYers, we often don't use some tools that often. So if buying such tool sets which lock us in with batteries which aren't exchangeable with other brands, I have learned to make some inquiries first.
Watched a different video on this issue, man. I have to say your simple way of getting down to the point is what I liked. Got all the info I needed quick and easy. Thanks
K 510 awesome I’m glad it was able to help you out. Thanks for watching
Was looking for a solution as there was no light on my Ryobi battery! 2 minutes after watching this video the battery was charging. Fantastic video and so easy to follow. Thanks for the upload!
Awesome glad it worked for you! Thanks for watching
You rock! I already got my new battery with the warranty, but this worked getting the dead one back up and running! I used my trickle charger to get the battery to 10%, then plugged it into the charger and it charged right up!
Thanks for the simple how too!
That’s awesome glad it could save a battery for you!
No need to disassemble battery. Simply attach leads of trickle charger to exposed contact points with a wood clamp. Left on ten minutes. Placed in normal charger and perfect. Thanks for idea!!!
Daniel MacDonald didn’t realize that would work too from what I’ve seen direct to battery was the way to get it to work
You need go bypass the board , so you need to disassemble it
@@DannySteel18 That may be true some of the time or perhaps even most of the time. But I did not disassemble my battery and I was able to revive it as described above. Saved me time and effort.
@@danielmacdonald16 you have the same name as the OP lol weird
@@TheBeardedJeeperk 😊and😅l l😅nilli😅😅I no
On the charger and charging! Thanks for the info. Yup, I believe the disassembly is required to bypass the board, which is what was preventing any charging in the first place. Once the leads were hooked, the charge quickly went from 11V to 17.5V, when I stopped it and plugged it into the charger.
Awesome glad it helped you out
Absolutely works.Saved two batteries.Used the trickle charger clamps directly on the battery in under 30 seconds.Thanks man.
awesome glad it was able to help save your batteries! thanks for watching
Marvellous! I had a battery that the Ryobi battery charger showed as faulty. Took the cover off as per your video, hitched up a car battery charge to it for twenty minutes (filling the battery to 12 volts) and put it in the Ryobi battery charger. The battery is now charging up. THANK YOU!
Clive Weaver that’s awesome glad it was able to work for you and save you some money.
Thank you! In the course of 1 hr I recovered a Ryobi, 18V, Dewalt 18V and a Black & Decker 40 V. I probably would have gotten new tools instead of batteries for the DeWalt and B&D since they are 10+ years old. 3 of the B&D were dead. So you saved me more than the cost of the batteries because I would have just replace the tools.
awesome I am glad it was able to help you. I really appreciate you taking the time to watch and leave a comment
Worked!....Thanks!....I just taped 2 small wires to my good battery and held it on for 20 seconds and it went from 2v to 10v and then it started charging.
And yes, you must remove cover on dead battery because anything under 5/6v will not show/read on upper stem.
Thanks
Awesome glad it worked out for you! Thanks for watching
Just did this to my 2a battery and it is back to life. Thanks for the hack.
Benjamin Ferguson no problem glad it helped!
I tried it first without taking it apart for 10 min, it didn't work.
Took it apart, used your method with direct charge for 1 min- BAM, WORKED.
Thank you ☺️
Common sense is dead! You bet glad it could help you out.
:oltage bump has to be done on the battery side of the bms charg / discharge circuit. CAUTION Only for a few seconds at a time. Check with a voltmeter usually needs overv 10 vdc. To charge If stubborn give it 3/5 seconds, check voltage, wait then try again. If to much for too long you may get heat, damage and fire.
Works great. Five seconds on the battery charger and it’s charging on the ryobi charger now. Thanks
Awesome glad it worked for you
No kidding dude! Great hack! You are going to save a lot of folks with this one!
D&E In The Garage yeah I thought it was awesome and it saves you some coin too
Worked like a charm I used a 12v automobile battery charger (lowest setting at 2A)...took about 5 secs at the terminals to bring it back to detectable voltage. Thanks
Awesome! glad it worked for you!
Thank you for the video, it worked for my battery (had to bring it back to 12V for the charger to recognize it) !! If (like me) you don't have a trickle charger but have another functioning (and charged) 18V Ryobi battery, take it apart as well and connect the + and - of the functioning battery to the + and - of the defective one
glad it worked for you thank you for watching
Good looking out, man! It worked. Wish I would've known this before I got rid of a lot of batteries before but I'm glad to know this now. I saved 1 battery today, THANKS. Have a blessed day
Mike Chapman you bet! Glad I worked out for you!!
This way worked beautifully. Tried without taking the battery apart but didn't work. Then finally did but instead of a trickle charger I used a known good battery and jumped it. Charging rn! Thanks bro!
Awesome glad it worked for you! Thanks for watching
Well sir after much messing around with trying to get one of the 3 dead batteries open that I have I was able to get the first one I got open charged enough to be recognized by the charger and start flashing green for charging. Thank you for this post you have saved me at least $40.
Tony True that’s awesome I’m glad to hear it was able to help you out
And for a final update I can confirm that 100% of the batteries I did this hack with worked. 3 for 3.
@@tonytrue3211 thats awesome I am glad it was able to work for you!
Totally worked. Used my Dell laptop charger (18.5V output) for about 20 seconds and it upped the Ryobi P102 voltage from 4.7V to 7.2V which allowed the charger to start charging again. This was especially good since my battery was still under warranty and they wouldn't be able to ship me a new one for a month and a half! BTW, Harbor Freight has a security bit set for a nominal cost.
Awesome glad it worked for you!
How did you use a laptop charger though?
Nice worked! I just connected a old 18v battery charger by splicing the wire and connecting it directly to the battery cells for a minute and it started charging.
That’s awesome glad it worked for you. These batteries are not cheap
@@TheBeardedJeeper exactly i went to the home depot and saw the prices and immediately searched for a video and saw this! Thank$!
@@Akziis you bet! Glad it helped
It worked! Thank you! Hooked mine up to my portable battery booster.
Awesome glad it worked out
You da man Bearded one. Tried first with a trickle charger and I was too impatient. The voltage on the Ryobi 18v battery seemed to be just going lower. I then hitched up the dead Ryobi to a 12v car battery with ~12.5v of charge. I left it on for 10 minutes and viola..... the green light started flashing. Many mahalos from the Big Island of Hawai'i. Saved me more like $70 (they have gone up in price a bit, go figure)
Thanks Erick I really appreciate the feedback and I’m glad it helped you out!
Thank you for this video. I had a 3ah that wouldn't charge, followed the instructions and successfully revived it. Like your's initially it wouldn't take the charge but I slid around my connections a couple times and was able to get a zap that was enough to get it charging again.
Awesome glad to hear that. Thanks for watching
Brilliant! Thank you - your video was perfect - easy instructions to follow, saved me from having to buy a new battery!
Glad it worked for you!
It work very well thanks, I had another battery @ 17v pigtails to it for a few seconds and slipped the cover back on a plugged it in and started charging on the oem charger.
Had the same exact problem. Worked perfect. Just a FYI don’t use the positive and negative on the stem part. Use the positive and negative on the base off the battery where u has two flat spots diagonal from wachother
yeah you have to take the cover off to get it to work. thanks for watching and glad this helped
Thanks for stating not to use the stem connectors to revive the batteries.. bc that was my main question while watching this video an luckily I didn't have to scroll thru comments that far to find my answer..
But how is it they claim you can put the battery in the charger for a bunch of very short periods to slowly get it back above the sleep mode level but yall say I can use those terminals to shock the battery back above that level??
@@danafaulhaber334 I’m not sure. I’ve never been able to make it work by just taking it on and off the charger fast. I would try that first and if that doesn’t work check the warranty. But if you are past the warranty give this a try
@@TheBeardedJeeper thanks for the response.. yea that whole 2 second in out in out bs is a pain an ive seen claims it could take up to a half hour for that method to work.. an after watching other videos after this 1 think its prolly better to take it apart to give it a Jumpstart so then its possible to check each individual battery instead of only being able to check the system as a whole..
Thanks again Bearded Jeeper for a quick response..
This actually worked. I touched 12v dc power to each battery. Brought each cell up to about 2v. Then plugged the battery in and now its charging. It hasn't worked for 3 years.
Just make sure you check the + - on each cell. Touch 12v to each cell individually for just 5 seconds each.
John Quilitz awesome glad it worked for you
Yep! Too far below charging recovery.. I hated that! I was sick of fixing em so I ended up ditching Ryobi all together. Great video bro. And yes.. if you break the seal it voids the warranty. Lol
thanks man! yeah I think when I can afford it I want to do all Milwakee fuel series I used my buddy's impact the other day and that thing was amazing!
Brought my 2Ah 18v lithium back to life! Thank you for the video. Much appreciated
No problem glad it could help!
Thank you Bearded Jeeper this worked straight up, quick and easy. Cheers
Awesome glad it worked out for you
Good video I have the same problem what small battery charger would you recommend to charge my Ryobi battery? Thank You
@@bill.Latham thank you! I would say any little trickle charger will work fine anything to give it a little juice
@@TheBeardedJeeperthanks for taking the time to make the video. Here is my question, I let my charger sit out in the rain last night and I discovered it this morning, I blew it out with my air compressor and let it sit for about an hour and then I plugged it in and I get a solid red light but none of the Ryobi batteries I put in there causes it to go from red to blinking. I thought it might be a fuse but then if there's a blown fuse why is there a solid red light and I know all four of my batteries aren't bad at the same time and they were not left out in the rain anyway. I have five or six trickle chargers that are 6-volt 12 volt which I guess I referred to as battery tenders you think they would put the adequate charge into the battery? I'm really not sure what the output is on the standard Ryobi single port charger
@@mrobvious1100 hmm 🤔 I am not 💯 sure. I would think it should but it might hurt the batteries. I think the chargers are pretty cheap though
Hi pal, good vid.
I have 18v ryobi battery that isn't powering anything but shows green (charged) on itd charger.
Is it worth trying your hack or is it a different problem? Cheers.
It might work but I would check to see if your battery is under warranty first. If it is you can get a new battery free.
Worked perfectly for me. 30 year old car battery trickle charger for 30 seconds. Had to slightly drill out one of the security bit holes on the battery. They'd added some plastic to the hole to keep it from being disassembled.
I tried this on a 2ah battery and it worked!!!!!!! thanks bearded jeep dude!!!!!!!!
Great to hear! glad it worked for you
💯 % this works!!!! Saved me cost of replacing batteries A+ review
awesome glad it could help you out. thanks for watching!
Just one question. What specifications do we look for the chargers.
For the trickle charger?
Great video. I was prepping to do this. Just by chance I shook the charger with the battery in place and it started charging. Obviously not the same problem but worth a shake.
Awesome
Thanks! This just brought a dead Ryobi battery back from the dead!
you bet glad to help!
PSA: deep discharge and subsequent charge of lithium batteries can lead to fire. Act accordingly.
I've found the Ryobi batteries will kill themselves if not fully seated in the charger. Also do not continue using them once they start to slow down, swap or charge. That will prevent the voltage from getting too low to charge safely.
You can also buy new 18650 batteries and replace them. Did that to a old pack and it's better than new, since battery capacity has grown significantly in recent years.
👍
otterpopjunkie thanks for the info. Definitely a good thing to be aware of don’t need these catching fire. 🔥
excellent information. thankyou for sharing!
0:50 I think that ryobi charger kills ryobi batteries. I’ve had a few batteries I’ve put on to charge, they charge fine for a few minutes, but I come back hours later and it’s flashing and the batteries don’t work.
That happens when the total cell voltage is high enough to initiate charging (green light) but then the pack is detected as not accepting a charge properly. Therefore the charger terminates the charging process, creating the red lights. That situation is caused when one or more cells in tbe pack hsve failed, and the charger deliberately stops charging them to ensure that there is no chance of fire, etc. So, the battery pack is failed and the charger is NOT what killed it. You can replace the cells and create a refurbished pack, but its a lot of work and can be costly because you must use 5 or 10 matching cells (you cannot just replace one faulty one). You also have to use so-called "high amperage" cells that are suitable for power tools, you cant just use any old laptop 18650s. You need to check the specs of the original cells and make sure you replace with cells of equal or higher "maximum amps current" - the 5 cell packs need higher rated cells than 10 cell packs.
Do you have to take it apart? Can't you access the poles without?
the poles on top do not work thats why the charger doesn't charge your battery when it gets too low it is a safety feature it wont charge it so you have to give it a boost
If I could like this 10000 times I would. Appreciate the video. You saved me $$$$$
Rob Robertson thanks man glad I could help. If you could share the video and subscribe I would really appreciate it! Thanks for watching
Thank you for the Video. The hardest part is once the battery is charged and used again one has to this method again and again? Any idea how to overcome this situation???
Nope you shouldn’t have to do it again like this. It’s only when the battery gets too low that the charger doesn’t recognize it so you give it a little jolt. It’s a safety feature.
Thank you, this worked for me! My big battery a P05 now is charging. it looks like there are 6 small cells inside the battery so i did touch the red (+) to two separate leads for about a minute each and that was enough to get it to charge using the ryobi charger. (When I charged only the first point it didn't work.). FYI i used a trickle charger 800ma battery tender jr. I used a small piece of speaker wire as my leads. i dont have a voltmeter so i just used 30 second timer and then tried it. Took me 4 tries but it worked.
Awesome glad this worked for you
I know one thing that causes this problem. When your tool stops do not try to use it even a bit more. Stop what you are doing and change or recharg that battery, like thebman said if the battery volltage gets below what the battery management system (BMS) allows . You wiill have to do this trick to get it back over the charging threshold. Charge your bathroom teries more often and pay attention to those with the built in level meter. MY 2 CENTS. good vid!
David Vrablic I did not know that. I usually tried to get a little more out of the battery. Thanks for watching
My P108 has in one corner a "plug" where a screw might have been. How do I tackle this corner? Also I removed two screws but the 3rd is stripped. So I only freed up two of the corners. WHat do you think?
The plug should just be a cover screw underneath how did you strip it use a normal screwdriver?
@@TheBeardedJeeper No I used a torque but it was one size too large or small the head must be soft metal ,,, then when I found the correct size the other two came out easily ... ok will pop the "cover" off ... if I can remove 3 of the 4 screws maybe I can pry that lid apart
BTW I subbed!
@@user-jv9qz2bu1r you might be able to but careful it’s just cheap plastic it may break
@@user-jv9qz2bu1r thank you 🙏
I bought a drill last week and love it but the battery charged once then played up. I watched your vid then inspected the contact points in the charger. I bent them out a little and viola. Problem fixed. Don't bend them too far or they will hit the battery as it comes in contact and fold up beneath the battery... because they are shite metal.
Four year later and I found that this works as long as it only low battery but I suggest that u buy a harbor freight 12V trickle charger that seen to work the best and safest it only put in .75 V. I didn't use spare wires the small clamps in place for 30sec at a time about 3m minutes in total before my charge started charging the battery , good luck and be safe
So I just got a couple newer Ryobi 18v 4ah batteries off FB marketplace & I bought them knowing they were “defective”.. when I test w/ multimeter, one shows 131 m V & the other shows 163 m V.. I haven’t been able to find anything about this type of issue.. any ideas/suggestions would be greatly appreciated!
Will they not charge at all?
You can jump individual cells in the pack using a second (known good) battery. Using jumper wires with alligator clips, jump a single cell that is low in charge to a known good cell on the good battery. MAKE SURE YOU ARE CONNECTED USING PROPER POLARITY!!! (Positive to Positive, Negative to Negative)
Use a digital voltmeter to keep measuring the voltage of the "low cell". When it reaches approximately 4v, do the same for any other low cells (but make sure you jumper to a different cell on the known good battery so as not to drain that cell too far.
Once all of the cells on the bad battery are over 4.001v, you can then put the battery in the battery charger and it will then charge it.
NOTE: Each cell can take a few minutes to charge up to 4v, so make sure you keep it jumpered long enough to get the cell's voltage above 4.001v.
I had a P107 battery (showing only 2 LED lights after the charger said it was fully charged) with one of the cells at 3.5 volts and all of the others were above 4v. Using this method allowed the battery to take a full charge again and showed 4 LED lights again.
I know you said 30 seconds. Using a meter, I found out that if the battery comes back less than 8 volts, it's not going to charge. The ones I had were in the 5 volt range and one was at 3. I connected my trickle charge to them, the ones in the 5 volt range took several minutes to get up to that 8 volt area. I monitored it with my meter and could watch the voltage climb. The other one that was at 3, it climbed very slowly but left it over night. This morning, it was at 9 volts and I put it in the Ryobi charger and it's doing its thing, blinking green. I've got one more to go (had a total of 3 of the P102 batteries)
Yeah some do take longer than others. Thanks for watching glad it worked for you
Mine remains a mystery. It is a 4AH Lithium Ryobi battery. I topped it off to get 19.7 Volts at the batteries and at the terminals, but when I press the drill's trigger, the voltage at the contacts goes from 19.7 to zero while the batteries themselves remain at 19.7 V. So the twitching circuit in the battery pack is going open circuit upon the drill loading it. Do these suckers have a counter that times out and renders the battery pack useless? Is there there some other system involved in operation?
Worked perfect for my 2 dead batteries. Wild.
Awesome glad it helped
Worked like a charm! Except i don't have a trickle charger and didn't want to drop the cash on one just for this, so i used an old 18v laptop power brick from my spare parts bin.
awesome glad it worked for you
thank you for pointing out the hole in the T10 security tip. I cannot use a T10 tip that I have, and I know why now. This hopefully will avoid the other solution of drilling a hole in the case to recharge
Yeah sometimes you just need the right tool for the job
Thank you for taking the time to show us what you found please continue make more
timothy bapp thank you for watching I appreciate it!
Where do you buy the tool to take the battery apart?
you can find them at any place that sells tools. I think they are called security bit drivers or something like that
My 18v battery actually shows full charge at the cells but the post shows zero. Any ideas? Thanks
I’m not sure I’ve had a few do the same thing and I just got rid of those ones
Why can’t you use the terminals on the outside?
I’m not sure I think it just gives it a better jump from inside. I’ve tried without opening it but no luck
What kind of wires do I need?
Any kind that will conduct electricity. Just something to put power to it
Nice one bud, saved me spending money I don’t have! Thanks
Awesome glad it worked for you
Thanks for the video, man. When I measure the voltage using the external positive and negative it reads 6.9V but when I open it up and measure the voltage on the internal positive and negative, I get 19V. Do you think there is a different problem I’m having? Thanks.
No sounds like you are doing it right
why take it apart gnd and power are exposed on the outside?
You have to take it apart when the battery gets too low it doesn’t let you charge it normally as a “safety” feature. You have to give it the juice right to the board itself.
In the user manual it says of the battery charger is blinking red it could be because the battery is deeply discharged and to simply leave it on the charger and it will eventually charge.
I have left them on charge for months with no luck
@TheBeardedJeeper Hey, I'm just a messenger. Maybe sometime it will work other times not who knows
@@Somebody2687 yeah maybe. 🤔 I never had any luck with it. Thats why I switched to milwakee
Thank you! This worked brilliantly for both a Ryobi and a Black & Decker - same concept applies! #welcomebackboyz #moneysaved
Awesome glad it worked for you. Thanks for watching. Make sure to give this video a thumbs up 👍🏻
Worked! Wow I have thrown out a couple batteries for nothing! Just an FYI one of my screws was hidden by a plastic plug.
Awesome glad it worked for you. I think I explained in the video that the plug is your warranty. If you take the plug out it voids any warranty you had on the battery.
Why you cant use the top battery pole without unscrewing it
I am not 100% sure I think it might be part of the thing that won't let it charge if it is a low voltage. taking it apart and putting the charge right to the battery cells seems to do the trick
I tried this on my Ryobi battery and it worked like a charm. Thanks for sharing how to fix it.
TwistyJ2 you bet glad it worked for you
Thanks for this video. Very straight and to the point. One comment I read said that Harbor Freight has a security bit set to remove the retaining screws. Could you please give me that part number? Would it also be available at AMAZON?
I went to my local hardware and got a T10 security bit and it worked
Sorry for the late reply this comment was in my hidden section for some reason. Here is an Amazon link to a nice set for cheap. amzn.to/3Po0X44
Thanks for your reply. I like reading them. I finally found a set at Harbor Freight. Are those companies that use them trying to tell us DIY people something?@@TheBeardedJeeper
Will this work on a 40v 2.6AH Ryobi lithium battery?
I am not sure I have yet to try it.
would this work for the 40V 4ah battery?
It might but taking it apart would be a little different. I haven’t tried one yet.
This is great man, hope it works. I have like 5 I need to try this to.
It works most of the time. It doesn’t always work but I’ve had good luck with it
I charged the batteries directly with a power supply and got 19.4V at the internal terminals. However, the external tabs still show 0V. Is there a way to reset the safety circuit to get it to work?
Hmm not sure on that one. Maybe there is a loose wire somewhere?
I have exact same issue as well and can't seem to find much online regarding this. Super annoying, I think must be faulty BMS as I've attempted to reset it by placing a charge as well as a load on the main terminals on the top of the pole, as that's typically how you reset a BMS. Did you ever find a solution to this problem? Anyone?
Also, this is for a P189 battery, what model is yours that you have the same problem with?
Thanks bro. This worked for me!
Awesome glad it worked for you thanks for watching
I have a ryobi op243 battery flashes red n won't recharge what do you think ?
What is it for? 24 volt may be different I’m not sure. But saw your other comment they don’t make them anymore? Is there a version that you can buy new? I would think the same kind of process would work just not sure since I’ve never done it
They don't make 24v for anything I have 2 string trimmers and 2 charger ports for 24v but now it's 18v or 40v so I have to buy new trimmers but they say it's a kit so I will buy it I can't open the 24v battery I don't have the right tool to get the 4 screws out
@@venutiraines2413 yeah and I’m not 💯 sure it will work sorry I can’t be more help
@@TheBeardedJeeper suppose I put a small battery tender on it for 10 seconds n see if it gets out of the dormant mode ?
@@venutiraines2413 I guess it’s worth a shot. Let me know how it turns out
Worked for me, thanks!
Awesome thanks for watching
I don't have a trickle charger, any other way to do this? I might be able to borrow one but will have to ask around.
Daryl Handley any power source to put some juice in the batteries. They just need to get to a higher voltage to be registered by the charger
I thought this video was also very helpful and purchased these items on Amazon. Ryobi P102 Battery Repair ua-cam.com/video/XYiukKFXg84/v-deo.html. Let’s see how it goes.
Mine blinks red then green like is charging then after a few seconds it stops and changes to a solid green showing that it's charged so I try it in the drill but it doesn't work do you have any idea why?
My packs are still at around 18 volts but aren't getting anything to the contacts. I think my boards are bad.
Very possible. This trick doesn’t work 💯 of the time but is nice when you need to save some money and it does work.
I don't have a trickle charger, only a booster pack... Kinda wanna try it with what I got any way.
It should still work just try it in small increments
Genuine & work great!
Awesome glad it helped you out
Can you help with a 36volt
I do not have a broken 36 volt try with. I assume you should be able to do the same process
My battery takes a charge, but only for like 5 minutes, then when I use it, it dies after a few minutes. I'm thinking one of the cells is faulty. I was thinking about replacing all the 5 cells with new 18650 batteries?
thank you!!! just resurrected three of mine using a computer charger!
awesome! glad this video helped you out! don't forget to give it a like and share. Thanks for watching!
Works like a charm! 👌
Awesome glad it helped
The crappy muddy music in the background really helps.
@@PHOTOGRASPER ohhh 😮💨 good I’m glad
Hey man! This is too cool. It worked perfectly.
Jim Davy awesome! Glad it could help you out. I’ve had a pretty good success rate with it too only a few older ones I couldn’t get to work. Thanks for watching
@@TheBeardedJeeper I had the success with a P189, 5 cell pak. All the cells showed about 0.30 volts. Then I tried a P108, 10 cell. Four of the groups showed 3.6 volts. The 5th showed about 0.75 volts. I tried to charge the individual group. That did not work.
Jim Davy yeah a couple I had to try multiple times. But sometimes a battery is too far gone
wow great thinking
Hope it works for you
@@TheBeardedJeeper thanks for the great advice have a great late thanksgiving!!
@@ahmedabdelmalekahmed6171 you are welcome. Happy late thanksgiving to you as well.
Sorry for my dumb question. it’s ok to hold the wire with my finger without taking a shock?
Alaor Neto I did without getting shocked. I would recommend getting some of those alligator clips that’s the better way to do it
Worked with my P10! Thanks!
Awesome! glad it helped you out!!
I have my battery on the charger but it just keeps blinking red and green
it may be beyond repair then. I would try this again and if it doesn't work you may need a new battery this doesn't always work
Why take the cover off instead of just putting charger leads to the battery contacts?
Because for some reason it doesn’t work putting charge to those I’m not 💯 sure why
Genius! Worked for my 18V
Darren Brown awesome! Yeah I found it works most of the time. Sometimes they don’t work but probably 80% of the time it does
Many thanks brother! Got it going in no time!!
1985GusT awesome glad it could help!
Thx man. I got a bunch laying around and they defective too. Gonna try!!
Awesome let me know if it works for you
Mine says is fully charge but it doesn't power the tool.
Maybe a false reading
P108 has paired batteries. Hence, the front paired battery was bad--replaced them. Packed now charges.
Good to know. Thanks
The answers simple keep them topped up all the time ... never let them drop off . They use a drop out circuit in the charger section and this is how it refuses to pick up on charging ..😀
You have far more patience then I do. Lol. That thing would be in the dumpster if it started not charging 🤪🤪 interesting video though!
Casey 250 haha thanks man. Yeah I would normally but they are like $40 a battery and this only takes a few min. I have had several of their batteries do this. If I could afford it I would switch to Milwaukee the fuel line is amazing
My Ryobi 18 v is show a full charge but doesn't work
Yeah this doesn’t always work I have one battery that is like that too. Haven’t figured out how to fix it yet
Typically if they're showing full charge but don't work what I've found by trasing back circuits is typically there is a ground circuit were connection severed somewhere a few ways to fix it if handy with A soldering iron and Volt meter one should be able to figure it out. If it's worth time spent on it or just wanna Tinker with it