Ryobi 40 volt battery reset. 

That's awesome!!! Good thinking!! I never thought that a paper clip would work!!!

I did the same thing you did. I watched other videos and just looked for the RST connection on the circuit board. Trial and error......... sometimes we get lucky........ :)

I'm glad it helped.

My pleasure. I discovered this just by trial and error using information from other videos.........

Tôi gặp tình trạng như bạn đối với pin ryobi 40v 6ah. Bạn có thể giúp tôi cách khắc phục

@@thanhpham1320 after getting the battery open, I found the location on the battery circuit board that had labels for GND, 3.3, Reset. I used a jumper (paper clip) to touch both GND and Reset at the same time, and it worked for me. Good luck!

Is that it? Should I be pushing a button or have it on the charger while jumping it

Glad it helped you!!

LOL!!! Hardly, just cheap when it comes to this kind of stuff....... :D

My first instructional video!! I did get a tripod for any newer videos should the need arise......... I only made this video because none of the others I watched had my same battery..........

I don't know what to tell you man. I think I explain it pretty well. You're taking a piece of wire with a solid core and touching the points that say RST and 3.5 to essentially make a connection for just a second or two.........

No, it's just a piece of solid core wire.

@@jefflbi thanks!

I used my 1970 Craftsman needle nose pliers which have insulated handles.

Any solid core wire will do......... I believe I snipped that piece out of some regular 12 gauge house wiring I had lying around in the garage..........

pry it open at the seam, and lift up the sticker for the battery indicator at one half when it starts to open.

No, just touch the metal around the holes, and hold it there for a few seconds. But you have to make sure you're touching those points alone and not touching any other metal point. I know it's a tight area, but it can be done.

The ground has nothing to do with resetting. You just want to touch the 3.3v and the reset points at the same time and hold it there for like 5 seconds

Sorry, but I really can't advise. What you're asking is above my knowledge level. I had to watch other videos of similar but not the exact same circuit boards and I just experimented with the information I got from those videos. Could be I just got lucky, but it's better than buying new batteries when these are just fine...........

Seems like something is wrong there. The voltage should be 4.1 volts between those taps and Cl1-CL10=41ish volts. The board is suppose to drain the high cells such as Cl2->Cl3 down to 4.5v and charge up the Cl3-cl4 cells to 4.1+. You could use a hobby charge with a balancer to charge and rebalance the pack. I did this mine, since my charger only does 6 Cells at a time, I just connected 4 at time. Otherwise you could drain as you said the high voltage ones down then put a 40v charge across Cl1 to CL10 till the overall voltage is higher than 20v and see if the charger picks it up from there.

It can also be that some cells have there CID popped and the voltage reading you see is not accurate until you take cells out of circuit. If cells out of circuit are charged to above 3.6v and RST is done and still not working then controller chips/cct are no good. Option then is to use generic BMS and charge generically. MOSFETs could need replacing. Can be time consuming to replace cells but if you have the time...

@@Swenser Your knowledge seems far above mine, could you please offer some advice on the below (TIA)? I tried resetting mine, but only made it worse. Previously it was charging for around 5 minutes before the red and green started. Now it won’t charge at all, and the battery level indicator stays illuminated always unless I put the jump wire back in. I’ve got the below readings across my cells. CLI- TO CL1+ =3.6 CL1+ TO CL2+ =2.6 CL2+ TO CL3+ =3.6 CL3+ TO CL4+ = 3.5 CL4+ TO CL5+ =3.6 CL6- TO CL6+ = 3.5 CL6+ TO CL7+ =3.4 CL7+ TO CL8+ =3.6 CL8+ TO CL9+ =3.5 CL9+ TO CL10+ =3.5 CL1- TO CL10+ initially shows 19.8, then shows zero, I remove the multimeter and place back in that same location and it shows 19.8 briefly, then shows zero. Do you have any suggestions on what you think I should try next?

Go to Harbor Freight and buy a set of “security bits” - cheapest price for brick and mortar. You want a security Torx #10, or ST-10, bit.

I'm also a non electrician, so I can't answer your question, but I know enough not to want to mess around with anything plugged into an outlet..........

Not sure what you're asking here? I assume you meant to type "charge" when you typed "change".......and what is "hokis pokies"? LOL!! But you're not going to charge anything. If you watch the whole video, you will see that all I'm doing is resetting the batteries so that it will charge in the regular charger. Follow my directions to the letter and hopefully you will get the same results........

If there's an alternating red flashing light on the charger than I would say yes.

Same here

Same here so far. Shows 1 light and multimeter reads 40v across battery. RST is at 3.3v and not 0 also.

Didn’t work for me either. Same board and same 1 light situation.

Same tried grn/rst and 3.3/rst no Luck

I would try the resetting process again. But just maybe there are some batteries that can't be brought back. They do need a certain amount of charge in them to start with. I've read that every time you plug a battery into a charger it does actually charge it for that millisecond before it tells you that it's no good. You might try plugging and unplugging multiple times, but by multiple I mean like 50 times......

I think a small phillips head screwdriver. By the look of this video it looks there there are 4 of them, one at each corner. And there is a label you can either peel back or make a slice with a razor blade. In this video I just peeled it back.

What is PCB??

@@jefflbi The PCB is the whole PCB.

@@jefflbi what do you have to do to unlock this plate after replacing the links with new ones?

@@tomnewtnt5718 Sorry but I'm not sure what you are referring to............

@@jefflbi PCB = Printed Circuit Board

Most likely not. The inner parts of the battery are pretty much sealed from what I can see. It never hurts to give the jump a try........

As with anything, there is always a risk, but think about it, the battery is so low on a charge that it won't charge............ so common sense tells me the risk is miniscule. Also, look at all the posts claiming that it worked like a charm.......... good luck.........

Yes, exactly how you see it done in the video..........

@@jefflbi Thakyou 👍👍👍

If this is the first time keep trying. I just had to try doing it again on one of the batteries I mentioned in this video, and it did not work. Could be there's a point of no return..........

Sure, if you want to pay for it............. most of the time this happens well after the warranty expires...........

Have you tried this reset procedure?? If so and it still doesn't hold a charge, the cells could just be shot/defective, in which case your only option is to purchase a new battery. There are aftermarket batteries available that are cheaper. I found some on Amazon. They last just as long as a Ryobi brand battery.

Sorry to hear. I guess some batteries are just too far gone. But I would give it another try to make sure you're touching the right connections.

If it's of the 40 volt variety like in the video then yes, it should work. Not all batteries have the same circuit board, as I pointed out, but they will have a reset and 3.x volt points somewhere.

Ty I turned it upside down and wiggled and it started charging thanks for the help

Ty I turned it upside down and wiggled and it started charging thanks for the help

Ty I turned it upside down and wiggled and it started charging thanks for the help

Ty I turned it upside down and wiggled and it started charging thanks for the help

Really??? The title says 40 volt.......... they all look the same on the outside. it's the inside that is different........

I just had to do it again on one of my batteries and it didn't work this time. Guess they only have so much life in them. Oh well. I'll be buy aftermarket batteries from here on out...........