วีดีโอ

Worked for me. Thank you!

I do battery rebuilds and this trick only works reliably if you have good battery cells that somehow became unbalanced. Unless you remove each cell from the pack, there is no way to measure for bad cells as all you'll get is the average voltage across the entire battery pack. So on the 4AH 10x cell pack, you can have 9x cells that are 4.2V with 1x reading 0V. That will give you an average of ~19V or ~3.8V per cell, which will look good when measuring with a volt meter. However, you'll never get to 21V as the charger charges each cell bank. Sooner, rather than later, that pack will show the same error again. The right way to fix these packs is to tear them down, test each cell, and replace any defective ones. It's a pain and requires some skill and special tools.

All I got out of this deal is all four lights rapidly, blinking, and sequence from left to right

That was a great help, but I have a question about where a flat silver insulation wafer came from. I could send you a picture of it.

You saved me from having to buy a new battery. Much appreciated!!!

Apologies if this may be a stupid question, but what is the guage of the jumper wire.

Thanks ser

I tried that mine doesn't work, no lites came on. I also do not have a rst holes on the side so i guess mines junk BUT i did contact ryobi and they would replace it. I didnt tell them that i tried this trick though..

Me fue de mucha utilidad la información, muchas gracias por estr video

Thank you, just did this to a battery that's been sitting for over a year. It was reading 16v but wouldn't charge, did your trick and now it's good again.

You might want to mention the warranty thing at the beginning of the video

Thank you, man.did work for me appreciated

Wonderful, worked perfectly, many thanks!!!

I did the reset I can not believe it worked. Thank you Thank you !

SWEET it worked perfect, I shorted the unit then hit the lights , they flashed and I reconnected the unit and booo ya it works !! Thank you!

I have a P197 that doesn't have the T2 or J1 that I can find. Does anyone know how to reset a P197?

It worked for me. Thanks bro for the video 👍

Just tried the jump with a paperclip and worked like a charm! Thank you!

1:06 didn't work AND after following procedure to a tee the battery started getting hot to the touch at the positive test point. I was afraid it would catch fire, 3 hours later it was still hot at + test point referenced earlier in the video. I ended up pulling batteries out and found 2 of the 10 batteries to be defective. 0 volts. 4:12

Thanks you so much!

Hi, I looked at your video of fixing the 18 volt Ryobi battery.. my battery green light all four lights keep flashing constantly and won't stop. What can I do in this case? Thank you

Ways Ryobi will make you buy a new battery. Thanks for the hack.

Didn't work for me on a PBP005. Also there is a plastic plug covering the back left screw. I heated the driver bit to melt through the plug since trying to pry it out with a small screwdriver was unsuccessful

You’re a legend, mate! Saved me mucho dineras.

hmmm you described all symptoms perfectly, but reset did not work?

Hello, could you please help me? How can I reset the BMS of a 1.5 amp battery? Will you have a video? Please share the link with me. I would greatly appreciate it.

This is a great video but for the price we should be returning them maybe then they will correct the problem.

Thank you!!! This worked perfectly on my 6ah HP battery saved me $140!!

Hate to disappoint everybody,the voodoo doesn't work

It's not acceptable that you should have to do this to a relatively new battery.

i have a 18v 4Ah Ryobi ONE+ battery that stop working. push the battery button and it flashes 4 times. when I try to measure voltage between terminals it jumps from10v to 0v. I went ahead and opened the battery and measure the voltage between terminals at circuit board level and got 18.61. I measure the voltage between the suggested jumper points and got 3.7v. I jumped making sure it was 0v, pushed the button and got 4 blinks and off. close the battery and put it on the drill tool but did not work. I plug the charger and the solid red no green indicator comes up, pointing to the very left where the temperature icon is, but there is no battery on the bay. With 0v across terminals and 18+v across terminals at the circuit board and no working with a tool, I am confused..... is a charging problem or a battery problem ?

Gracias me funcionó 😊😊😊😊

Every vid I've watched tells you to short different circuits

Thank you verry much you deserve a like. 👍

Thank you

Good word, Brother. Thank you for sharing. Paul Creason

This is for batteries that are out of warranty. If you remove that plug, your warranty is void and you won’t get a replacement battery in your battery might be.

Outstanding my friend! My battery is a 3AH so the jumper spots were smaller and a little harder to find. But once I found them and followed your instructions- bam! Light reset and charging like normal. Thanks my guy!

Worked good, thank you 😁

100% Awesome. I had done the jump start and had voltage in the cells, but the charger still indicated a bad battery. I assumed there was a safety on the circuit board but had no idea how to reset it until I found this. It worked like a charm. Thank you!

Hi Larry, I have the exact same battery with the same issue. Battery was fully charged, and the charger shows a solid green light as expected. However, the tester button flashed 4 time and no power is outputting. Opened it up and tested the batteries as shown and getting about 20 volts. Tried the reset jumper, it flashed all 4 LEDs then flashed only LED number 2 and 4 during the jump reset. Am I missing something or is this batter gone?

Thanks a million, battery is ready to go!

Awesome, worked perfectly thanks

Soldered a red wire on the positive and a black wire on the negative. Melted two indentation on the back end where I can thread the two wires separately. Closed the cover, and viola! no need to ever open it again. I just have two short wires (so they never touch) I can tap with pins connected to a 12v while on the charger. 😀

Fixed my battery. Thank you for the video

Great hack but opening mine I find that it's a different control board with no well defined at T2 or J1. Battery has 18+ volts and each cell is about 3.8v but still won't charge so I'm assuming it needs this reset but I'm afraid to start shorting out terminals on a lithium battery unless I know exactly what I'm doing. Thoughts?

Tried this about 6 times. Never was able to get it to work.

Thank you for sharing the message about our risen Lord and Savior Jesus Christ.

I have been buying tools from auction that come from Home Depot. Had a combo Drill/Impact kit (new customer return). One of the batteries was dead. Checked the cells and they were all close to 0 volts. Jumpered the cells with a good battery. Voltage came up but still flashing Red/Green on the charger. Repeated this 2 more times; voltage was now about 16 volts across all the cells. Still no good. But now getting all 4 LEDs flashing 4 times when the button is pressed. Jumpered J1 and T1 as per this video on a PBP003 battery. It has the same electronic board as in the video. Pressing the button now yielded a single LED. Put in on the charger and it is charging fine. Thank You for the video and the great explanation!

why post this with a good battery?