Ryobi 40V battery fail, Master Reset!!! 

It works BUT..... Those who have batteries cast aside years ago because of "defective" signal may find it takes a bit more work to bring these back... Mine was two years old when it died and had sat for another two years before I found about this hack to fix it. All went as described EXCEPT when I touched the reset and hole next to it, no lights. Nada. I had to push the button while the jump was in place to get the row of lights to come on and stay on (instead of blink) . But that was only the first step. When I placed the battery on the charger, it only charged for a few seconds before flashing "defective" again. I repeated this many times. Reset, charge, fail.... reset charge fail. But each time the normal charge light blinked green a little longer. Finally about the 10th reset, the lights on the battery came on by themselves when I did the jump. First time that had happened. And when it went back on the charger, it finally behaved normally. No defective green/red combo. So apparently had to get enough juice back into it for the reset the actually work. So be persistant. I have no idea how long this battery will last given these issues. But just be aware this may be an issue on older batteries in a low charge state.

IT WORKED! Just one tip for those watching, buy the Security Torx bits. If you buy the regular torx, you'll be highly disappointed as it won't fit. Thank you so much for posting this video, saved us so much money!

Just did this - seems to have worked! The battery is charging normally. Now if the mower only starts when I put it in, I’m back in business. Otherwise I’ll be searching for videos about testing and fixing that next. Thanks the the clear, thorough, and accurate advice.

Great video; this worked! Two notes: 1. Might mention that "dummy plug" just covers the fourth screw. 2. On older Ryobi 40V batteries, look for 3V GND and RST. They are in a different place on older motherboards. I noticed you jumped "RST" and the lone contact next to it. My "RST" was down in the corner among many others. Right next to "RST" was "3VGND" or something like that. Jumping RST to that did the reset. BTW, On one battery I didn't need to push the button to reset it; it went on its own as soon as the jumper connected. Overall, you saved me some money on multiple batteries. All work now. Thanks!

Hey man , thank you for sharing your time and effort and mostly your knowledge. Very well appreciated.

Thank you! Worked for me just with the paper clip jump and didn't need to hold the button. I needed to use my Ryobi lawn mower this weekend and have already ordered another battery, but it didn't arrive as it was supposed to two days ago. I'm glad I found your video. 👍👍

5:44 The jumper reset my battery. Low use. Just used one day and would not charge. Can’t believe that reset isn’t built into the button. Hold for 5 seconds or something. Thank you so much for this straight forward video!

After watching and trying all the other nonsense this worked like a charm. I can’t believe all the time I wasted with the other “fix” methods. Thank you for a great video.

Fantastic. Everyone in the family was amazed that I fixed it. 😀I didn't need to hold the button. It flashed one upon reset. But this will happen again. That's the best part of your video and the bonus tip. I have a lineup similar to yours with 6 batteries. BTW, I had 2 dummy plugs. After trying to pry them from the edge I realized the best method was to use a small head Phillips and maul them through the middle while twisting. Within 30 seconds that enabled enough leverage to yank them out.

I watched your video and read the comments and tried it. Nothing worked. But then I used my tweezers (pointy tips vs flat) and stuck them in the holes at the same time and pushed down a little. That made the lights turn on and then the single light flash. If it wasn’t for your video I would never have tried it. Thank you!

Thank you so much I bought 2 at the swapmeet for $5 each. now they are working!

It worked! You are the first to mention to press the button while the resets are jumped and my battery is currently charging. Thank you!

Genius! Super simple. Took less than a minute to get this done. Thank you!

This worked. On mine I didn’t have to press the button, just made contact with the RST inside. Fashioned a paperclip to look like yours, worked perfectly. Thank you!

I've tried several ways that some RU-vidrs introduced. However, only your method works perfectly. As a result, I salvaged my Ryobi 40V--4Ah battery. Thank you so much for your valuable contributions!

I have been looking for a video like this for quite some time. Thank You! Last summer I replaced my entire tool catalog to Milwaukee because of this battery system. But I hung onto the Ryobi's because I knew someday (or someone) would figure out how to restore these batteries.

🎉 You rock! I had set it aside with the intention of having to throw it away. My wife mowed and kept restarting the mower until the battery was completely drained. Gave me that error lights on the charger and tried taking it off and on 100 times. So simple and it worked!

Thank you for this video! I had a 40v battery for my leaf blower that showed a fault. I took it apart and cleaned off some mild surface corrosion and tested the voltages for every series and they were good, but still wouldn't charge. I inspected every component and nothing looked out of place or obviously burned. I completely overlooked the pads for the reset! As soon as I shorted those pins together the 25% led on the battery flashed and it's now charging. Thank you, again!

I was about to go buy another battery or just switch out to a gas powered one completely when I decided to RU-vid if there was any troubleshooting for the battery luckily I stumbled upon you’re video and all I wanna say is Thanks for saving the day and teaching me something new !

Your method worked perfectly! I tried the jumper method before but didn't push the button at the same time and that was the difference maker. You jump it and push the button and it works. Thank you much, saved me at least $100 for a new 5ah 40v.

On my 4AH 40 Volt, this worked by holding the jumper for about 4 seconds, then one of the lights flashed. I checked before and after voltage and both were 34 volts. I then set it in the charger for a few hours and now my blower works again! Thank you for taking the time to video this for us.

You are the kid! Saved me $169 from buying a new battery.....worked like a charm!

Thanks - again! I just reset the same battery for the second time about a year later. The hardest part was finding the star tool to open the case again. ☺

I have several old Ryobi 40v packs that "dead". I've been saving them to harvest the good cells, but never have. I'm going to give this a shot. Thanks!

Thanks for this video. I was disappointed that simply jumping the reset terminal didn't work so I Googled again and found your video. My super expensive battery might have more life in it yet!

Incredible. In an ideal country of honor in our product design and not planned obsolescence greed, we'd have an external reset button to bridge these two and press power. Even official steps in the manual for such a process. But I'm thankful it works and it's still not terribly difficult to reset. Mine actually flashed when I just touched the two for the reset - labeled RST. Working! Probably just varies per revision or model of these batteries, if yours doesn't automatically blink on RST bridging, press the power button at the same time. Had to use a real thin safety pin, took some wire clippers to one end. Tiny little RST holes, discouragement of that easy fix reset every step of the way hah. You know I wonder how many of these batteries Ryobi takes in and merely resets, bam refurbished.

This worked for me and I did have to press the button! Thanks for the tip and the link to the drill bits, they worked perfectly. For anyone trying to get up the plastic plugs, I used a pocket knife to gently work a hole into them and pry them up.

Great vid, thanks. I noticed the PN, Rev, and sequence number on the main board. Hard to see clearly but yours looked like 007, on mine, it was 026. My battery reset without pushing the button. I held the jumper for a five count and the lights flashed. For those who are trying to figure this out, It may be helpful to note the board version as you determine how to reset, jumper only vs. jumper and switch...

Thank you for this video. It’s short, sweet, to the point and it helped me get my battery to charge again.

Dude, love you lots man. Worked like a charm. Used a drill bit at super low speed to drill out the dummy plug covering the 4th screw. Thank you so much.

Thank you, it worked! I think it s interesting that nothing is mentioned in the battery insert about resetting. Shame on you Ryobi!

This actually worked for me. Charged right up to 40.2 volts and I'm back in business. Was facing $180 to replace it as it was 4 months out of warranty. Thank you kind sir.

Another success. Thank you so much. Just had to do a little "digging" to get the cover off the 4th screw.

Never had so many problems with my Milwaukee like i have with Ryobi 40v. Thanks for the video. It worked on one of them.

Excellent video. Thank you. I followed your instructions and I was able to get my Battery/Charger working again. The battery is charging as I type. The “dummy screw” was just a plastic cap. I used a drill to put a hole in it just enough to get a screw diver in to pry it out. Then I used my drill and T10 bit to remove the screw that was underneath. I used a paperclip to jump the pins. The Green lights came On and I was able to charge the battery. I also did not have to press the Power test button at the same time. Thank you again for your video.

THIS SO WORKED.... THANK YOU! I had a brand new 4.0AH battery my family left outside in the rain and it wouldn't work anymore. I took it apart, cleaned it up, jumped the jumpers and pressed the button and BAM, works like a charm. Saved me $190 from going to get new battery this weekend.

Great video. Had a battery in sleep mode. Tried the in and out of charger and didn’t work. Bought a new one, but before I opened box I tried your method of resetting. It’s currently back on. Charger charging correctly. Saved me $300

I followed your directions and it worked perfectly the first time. Thank you!

Worked great. Didn’t have to push the buttons during the “reset”. It’s now charging! Thank you!

Just did this. I had to press the power button while jumping the RST. Battery now appears to be working and is charging. Woohoo! Thank you for posting this video!

This worked for me. The lights never flashed during the reset jumper, even when using the status button. When I completed the reset and retried it the battery came out of the frozen state. Now fully charging and works well - Thank You

Thanks for the simple explanation, pressing the button made all the difference.

Thanks for a very helpful video. I had the same problem, nothing on the internet worked until yours. It took me only 2 minutes and it did exactly like you said. On charger now and $6.00 is better than $149.00 to replace. Thanks again

Thanks a lot Sir. Your technique worked with my 40V 5AH Ryobi battery which was out of warranty. The only difference with my battery was, when I connected the reset terminals, all the 4 lights momentarily flashed once. I did not have to press the battery indicator button at that time. Now the battery is charging perfectly as before. Prior to the reset, whenever I pressed the battery indicator all the lights were flashing but it was not charging. The charger was flashing green and red lights which indicated defective battery. After the reset procedure, the problem of not charging is fixed.

This did the trick. Had tried the “in and out of charger repeatedly” and “jump from a good battery” before with no success. This was easy enough and as a bonus, actually worked. Appreciate the cautionary comments you make in the video but it didn’t take any advanced electrical skills to do this. Thanks for this video.

Thanks, it worked. I used a staple I bent to reset. The light did flash when I did the reset. It might have been good to go at that point but I went ahead and pressed the side button too where the 4 lights lit. I put it back together and my charger worked and fully charged my battery again. Thanks again.

Mine was totally dead, battery error, lights on the battery unresponsive. My battery had a different looking card, but I followed the instructions and connected a paper clip between the gnd and rst contacts and pushed the button. It flashed green once and now the battery works again. Thanks!

Just used this information to fix my Ryobi battery. Saved me $50. Thanks for your video!

I came across your video while actually searching for how to “discharge” my 40V RYOBI that had also become unusable, blinking Yellow/Green on charger. I was thinking I might overcome the issue by fully discharging the battery pack. However, after watching your video, I decided to try your second method for resetting the battery (jump & press battery button). Luckily, all I needed to do was the first method (jumping the circuit) to reset the battery. Nevertheless, I appreciate your video for revealing both fixes. It’s nice to have a backup method if In encounter the issue again. The battery was down to one bar but it charged up without error and now works as good as before. Thanks!

Thank you so much for this video! Saved me a lot of money for a new 40v battery. It took me half a day to figure out how to remove the "dummy plug" (that's me! ha, ha!) but after that it took a few seconds to reset the battery. I used a pair of fine pointed tweezers to bridge the two little reset buttons and it worked great. The battery is on its way to a full charge. Thanks again.

Great video I did exactly what you said to do and it fixed my battery. Thank you I was going to take the battery to the recycling center. Appreciate you taking the time to make the video good step by step instructions 😊

Thanks, you rock! Was able to at least fix one of my two "bad" 40v batteries. This fixed the one with flashing lights, it however did not work for the one with no lights/no signal.

Pure genius. In my case I had to use a Dremel tool to cut through 2 screws to open the battery but the battery is now back in service!

Mr. Thank you very much for showing me that I tried everything that you did watching other videos thank you I'm going to try it your way

Thank you very much.. I followed every step as you described and my battery and I are now very happy. Nice job. God bless you.

Thanks for this tip! That last part about the button was key for me!

Big thank you for the video. If I would have done what you told me not to do, then it would have worked perfectly & it would have taken less than a couple of minutes. Great job.

Thank you! Just fixed a 5 ah that I thought was lost! I didn’t have to press the button though. Mine flashed as soon as I jumped the two spots together.

Yep works great, my lights flashed on contact without pushing the button, Thanks

Stop STOP: This guy is a superstar !! I tried the paperclip trick on my ^%&^%$$#% 40 volt Ryobi battery and I could never get it to re ingage. I did as he instructed above using the paperclip AND pressing the test button on the back of the battery at the same time and WOWWWWW. I did it twice but it worked. His method worked and saved me a lot of money. Thank you again.

Worked for me great, I didn't have to push the button but I did anyway after jumping connection. Thanks a bunch. Previously I tried the battery to battery method which didn't work.

It worked for me as well! Thank you so much for the tutorial!

Thank you for taking the time to make this video.

You think they would put a reset button on the outside but I guess that doesn’t help sell as many batteries . This 100% worked , wow! You are the best. Thanks for taking the time to put this video together for us . My fiancée now thinks I’m handy. I guess I’ll let her think that until the next project 😂

Followed the instructions to the letter. Worked Great!! Thank you.

Worked perfectly for me! Thanks for the easy to follow video.

Video is the best. Worked flawlessly. Thanks!

Your video saved me a battery purchase. Thanks for taking the time to post.

Thank you! Wish I would have seen your video before I went and bought a new battery.

I tried this procedure today and it worked just like you said it would. Thank you so much.

Holy **** it worked!!! Didnt need to push the battery button, just held down the RST buttons for 5 seconds with a safety pin. Thank you for saving me $150

Dude, thank you very much. I recently purchased a ryobi string trimmer at a yard sale really cheap because the owner couldn't get the battery out. I got it home and sure enough that battery was in there good. I decided maybe I could take it apart and get it out. Well that didn't help much because once I opened it up there was still this cage around d the battery lol. Finally I was able to fish my little 6in. Scale between the lach and the battery and I had to wack on the cage with the scale in place and it moved so I knew I had it at that point. Either as a practical joke or accident someone had gotten Glue on the battery and it was Glued in place. Once I got it out it was behaving like the one in you demo, so hopefully it will work once I follow your instructions. Which I will do at my own risk not because you suggested it or anything because you did not. You said not to do it unless I was qualified. So if anything were to happen it's Not on you my friend!🤠👍🙋‍♂️

I just bought a leaf blower that came with two batteries. No problems yet but I am interested in what people find out there. Nice video production. Well lit . Peace

This worked for me. Mine has two dummy plugs that were tough to remove to get to screw. Thank you for saving me a lot of money

Thank you, this worked perfectly for my issue. Glad to have use of the battery again. 👍🏿

Thanks for making this video. I found 2 batteries on ebay with the same model number as yours being sold "as-is". Wish me luck!

Thank you! I can't believe this actually worked! Thanks again for taking the time to do this video!

This worked perfectly. I was so pumped to get my 40v 5ah battery working again.

Worked perfect for me! Thanks so much.

IT WORKED!!!! Thank you so much for this insightful video saved me $$$$ on a new battery!

Thank you for taking the time to make this video. This works for me.

Brilliant. Pressing the button while jumping it worked perfectly. Thank you for making this video.

I like your video straightforward to the point my Ryobi 40-volt battery is blinking green and charging awesome

Greetings Mr Muchas gracias for your tutorial I going to do that because I have that issue thank you for the information 👍🏽 God blessed you.

Awesome, you just saved me from having to buy a new one, worked for mine , thanks for posting 👍

I’m glad I found this video. I was about to buy a new battery. And Ryobi batteries are not cheap!

Thank you sir! This was super easy to do and just saved me from purchasing a new battery.

It worked, thank you so much. very well explained.

Reset method worked perfectly! Thanks!

Amen! Thank you for mentioning the button. I dropped my blower and thought the battery was junk.

Thank you! Just saved me $100+! Just did it on a Ryobi 40v 5ah that I hadn't touched for a couple years while in an apartment. Would have sucked to have to buy a new one!

Thanks a ton. Same issue and resolved following your process

Great video really helpful I just did mine 40 volt and I surprise myself it really works it really really does work

Thank you, This worked for me after a deep discharge on an old battery. It works.

Thank you for sharing, your tip helped me out.

Mate your a champion thanks for the vid just sorted a battery my wife said wasn’t working sir you probably saved my marriage

Thank you very much, I did it and work really good.

Thanks buddy, Appreciate your posting this.

You just saved me $199!! 😊Thank you 🎉😊

Thanks buddy, worked a treat. 5AH back alive