Ryobi Battery Repair - Battery is not charging, how to fix [Quick Version] 

I started my AT hike in 2007 as a LASHer the whole time.. I've had a couple years where I didn't get to hike at all. Now less than 400 miles to go and I haven't skipped a step or yellow blazed at all besides into town..

Actually, I am not 100% sure. Possibly something to do with the bms maybe.

You're welcome!

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You'll still need to do this probably, I've had to do it once or twice since then.

I put some chapters in the original video to outline specific points of rambling and useless info.

We have the early light bulb manufacturers to thank for this little but wasteful industry standard. I understand that businesses need profit to stay in business. As well innovation to the industry of electronics has this little trick they pulled to thank, but...There was nothing to stop lightbulb manufacturers bulbs from working for 100 plus years in the early years . A great product for the consumer but not favorable for a company who would much prefer to generate revenue annually equal as to what would have been centential.

You need a tamper-resistant T10. They have a small hole in the middle for these types of screws.

No puedo decir el 100%, pero parece que la placa del sistema de gestión de la batería puede ser el problema. Lo siento, el español no es mi primer idioma.

@@brenth7774 Merci beaucoup pour votre reponse

Not sure - I take my batteries out most of the time but I still have to boost this battery once in a while.

Yes, they're saying leaving battery in tool creates a drawl and drops it below voltage level where the charger doesn't recognize it and there for won't charge. That's what i read and plan on doing.

It's never been a problem for me. A basic tool like a drill or a grinder shouldn't draw any current when not in use. I expect it to be a completely open circuit when the trigger is not activated.

Those are tamper proof torx: amzn.to/3btXssz

Thank ya sir

1 dead battery cell. Needs changing

Why would you? They're 2500mah cells - can only go to a max of 3000 if you still want high current.

it sounds like that battery management system might be bad.

I believe this means the battery is not going to work. If the repair tips didn't help, I'd say the battery might be done. You could possibly try contacting ryobi also.

Because that doesn't bypass the BMS. If that worked, the charger would have worked, too.

i think in that case it might be the management system board that's on the battery. Might not have a choice but to replace the battery.

So does the msb issue preclude replacing cells, which I understand are about a dollar a piece? I’ve gone thru so many ryobi batteries, and this is a relatively new ryobi brand battery. It seems to be a crapshoot to buy the knockoffs, though. What a racket!

That may just be that the dead pack is accepting so much current that it's causing such a high voltage drop. Does the good battery still have bars of charge when you do this?

@@ScoreboardTV Most portable tool companies do the same thing with their chargers. Voltage low - don't charge. Each battery pack has its own Battery Management System (BMS). The BMS is supposed to, among other things, PREVENT the battery from going so low that it can't be recharged. The BMS may do its job by shutting the tool down at the proper time, BUT if there is a bad cell in the battery, (that's where an actual repair would be needed, ie, replace the bad cell) that bad cell, if you don't immediately recharge, would continue to drain the battery to such a low voltage that the charger won't recognize it when you finally get around to charging it. A second scenario would be a BMS that was malfunctioning and just letting the battery run down too low in the tool to be detected by the charger. That would also require an actual "repair", ie, replace the BMS. In both circumstances, you can make the battery work by taking it apart and zapping it, but it isn't "repaired". I hope this helps you understand why I questioned whether this was an actual repair or a "pain in the ass" workaround. In this case it seems to have been a one off malfunction that got straightened out by this technique. I think for a fair number of times this will be a workaround rather than a repair.

I was able to get more use out of it multiple times but it did have the same issue again, it's sitting on a shelf and I don't remember how long that's been. it might be enough to get someone else by if they can't afford a new battery right away.

I hear ya, nothing really too complicated here, just attempting to get a bit more use out of the battery pack.