Thank you! I could not get the 3-wire charging method to work. Instead, I used an old 19V laptop power supply and 2 wires to charge the battery terminals for about 30 seconds. The battery pack went from 2V to 12V. I put the battery back on the charger and it charged! The hard part for me is actually getting the plastic cap to one of the screws out. For the screws, my regular torx almost fit and could take out 2 screws. But I eventually have to go to Harbor Freight to get a $6 security bit set that can unscrew at ease.

I opened up my dead battery to bypass the protective circuit, and just used a known good battery with cover on to jump wires to for about a minute and it worked like a charm.

I fixed mine by putting the battery in and out of the charger quickly about 6xs and on the last one it recognized the battery. Worked on 2 of them.

I know I know they want to sell more batteries, but why the hell don't they have a special connection built in so purchasers of their products to just plug in a special charger of some kind that only allows a 30 second charge to kick start the ( expensive ) batteries for consumers. This a wonderful tip, thank you.

Just a note for the channel. No Manufacture can deny your warranty claim simply for opening the device. The FTC has given notice on this multiple times and the myth persists. Open all your devices.

I've now watched a half dozen videos on this process, and like this one the best. Many thanks.

This worked for me. :) But, It occured to me that if all you're doing is pushing a bit of charge in, there's no need to use the ryobi charger, and wire nonsense. (I have a different charger that seems to have another security pin). In the end, I just used a 12V 500maH wall charger that gives 17V not under load. held that aginst the terminals for about 5 mnutes, until I was solidly above 13.5 V (which I'm assuming is the cutoff voltage of 2.7V per cell). reassembled, and it is charging as we speak . Cheers!

This worked for 2 of my P102 “dead” batteries. What I learned though is that you need to touch the GND side before the + side . When I had the positive connected first … it went to “defective “. When I touched the GND plus sensor wire then the positive… it worked. 2x at 30 seconds then back on the charger and I have 2 working batteries! Thank you!

Easier than I thought! No jump start needed. Once I opened it up and inspected the cells I found a break in the circuit. They were all held together with hot glue which had cracked. Probably a sharp blow like dropping the battery had broken the joint connecting two cells. I glued everything tight and soldered the bus. It worked! My 5 tool pack now has 2 good batteries... just like it came with 18 years ago.

I was on my way to HD to buy some new Ryobi batteries and decided to search on fixing them first. Found this video and gave it a shot. Got one battery from 4.9v to 15 in just a few minutes, and the second from 0 to 15 in just a few minutes longer. One is finishing on the charger now while #2 waits it's turn. Awesome hack, thanks!

It worked!!! I had two dead (detective according to charger) ryobi batteries laying around for about 3 years. This worked like a charm. I used my car battery to jump them.

This worked! Thank you! $20 trickle charger and $10 for a set of hex lock heads saved me $100 on two batteries!

This trick is something I have done with car chargers, the newer smart chargers won't charge a car battery if it's really low (like 8v or lower) but if you hook up the charger then also hook up another 12v battery (or anything close) it will then start charging, I had 12v batteries from UPS power supplies and I would use that to just trick the charger. Now, technically if a lead acid battery drops that low the cells are damaged but you can still put enough charge into one this way to last a few days and to get you to the store to buy a replacement.

I had a brand new Roybi 18V battery sitting in garage for a few years and never been used. Recently take it out and plug in and it won't charge. I tried three methods and not be able to revive the battery. This is the fourth try and it worked. Thank You ! Also in my case I found out that the negative and neutral wires should not be touched each other when attaching them to the negative terminal of the battery. I felt really happy finally the battery can be revived using your method.

Also know that Ryobi's various chargers can have different circuitry and if one of my batteries won't charge in one charger I'll try a different one. I have 3 different models acquired over the years (Models P114, P117 & P118) and sometimes the newer P117 or P118 charger won't pass the test to charge a battery but the older P114 model will. That particular charger dates to 2014 or 2015 and either came in the box with a leaf blower or as part of a 6 piece tool combo.

I had success with this same issue by just connecting the positive and negative terminals on the bad battery to a good battery for 2 minutes without taking the battery apart. After this the charger did its job and charged the dead battery.

Thanks got my two battery packs working in 30 minutes. Good video. Except I just flashed the terminals with a small 12 volt battery charger for 30 seconds.

Thanks! Your tutorial made this a quick and easy project! I brought an almost new but non-functioning pack back to life!

Yooooo, this was an awesome hack!! I had some spare 14/2 wire and I just looped the ends to slide over the internal clips...worked like a charm. Gotta say, I was a little nervous that the battery was going to explode or something, but it didn't. Glad I brought my dead battery back to life. Thanks so much for making this video!

A simpler way I found in another video is to just connect one working, fully charged battery directly to the bad battery, positive to positive, negative to negative. Some wire and electrical tape did the trick. It worked on one of my bad batteries, after a couple of minutes of battery to battery charging the charger accepted the bad battery. For this to work you need to have one working battery, obviously. I have one bad battery left. I'll open it and check the cells. Thanks for a great video.

Thanks man i had 2 4 ah batteries that i let sit too long and wouldn't charge it was my fault but still a huge bummer. I have watched a few videos about this yours was by far the best i have come across. I have been a little nervous to try this until i saw this and you broke it down simple and clear. I now have both my batteries back and you just saved me 100 bucks thanks man

Your video is the best one out there. My Ryobi Li-ion 18v battery was totally dead! Almost no voltage and I measured the voltage of each battery as you said to do and they did not measure the same. I tried your method exactly as you show in the video, and it worked like a charm! Mine went bad after using it on my circular saw. The charge ran out while cutting a board. I let it cool and then when I tried to charge it...nothing! This method brought it back. Thanks

Great video, I had this exact same problem, my battery would just flash red on the charger and wasn't that old, I found your video and said, I might as well try this before I go out and buy a new one. Well i followed your video step by step and IT WORKED, my battery has recharged and is back to life. THANK YOU, THANK YOU, THANK YOU

I used a similar method, but the old battery was so low the charger still didn't recognize it. I put a good battery in the charger and once it begins charging, use ur method below the board on the dead battery, AND wallah! Worked like a charm.

Thanks a lot for making and sharing this video. Clear, concise, and easy to follow. It did not work for the 2 RYOBI 18 V batteries I have. I’m glad though, because you pointed out that, it will not charge or wake up, if one or more cells is depleted. Mine read

Hi, just tried this method, simple explanations, worked 100%, thank you from Ireland.

you are brilliant. I'll need to watch this a few more times. but since I have 5 batteries that won't charge, it's worth learning.

Worked great, I used alligator clips to make it easier and just used the plug to disconnect. Originally read as 03.009V, after 3 cycles of 45sec it read 13.641V. I was then able to charge normally. Thanks for the tip. 😊

Such a great hack. Thanks so much for posting this video. Had a great time trying it out. I had an even better time confirming it works. You’re the man.

I just found a bunch of ryobi tools in my alley in a box saying bad battery blower drill, this 💯% works

Dang! Bro thanks for sharing it’s amazing my battery now charging, it saved me from buying another battery.

Worked for me. My battery was 0.5v and I had to charge it to 18v to get it working.

This worked out great! Used my portable car booster to jump the battery back to life…. CLEAR!

Life saver, or actually battery saver. Thank you!

Thank you. Your instructions are clear and easy to follow. The most difficult part was getting the correct T10 bit to extract the screws.

It's the only hack that worked for my Ryobi batteries after watching loads of different vlogs.. much appreciated.

Thank you for the video, worked great. I have some batteries that I ordered but this allows me to use my tools still until they come in.

Worked a treat - charging now - thank you....

Thank you for saving me the cost of a new battery!!!!

Hell yeah, this helped save one of my batteries I was about to throw away! Thanks!

Thanks for the video . From your video I did something a bit more simple. I have a trickle charger so after I took it apart I taped the trickle charger ends directly to the bottom negative and positive for about 10-15 seconds. I tested it with positive results and now it charges. My items were manufactured in 2014 and never got taken out the box!

Answered some questions I have had , thank you

Thank you! Took about 10 mins. Canceling my order for replacement batteries.

Thank you for the DIY info. I was able to recharge now my battery following your instructions.kudos.

Great video brother, thank you!

Great video! I was unable to charge a dead battery using the 3 wires from the charger. I was able to use a fully charged battery and jump the dead battery pack with 2 wires. The dead battery showed 1.56 volts at the battery pack, while the tower showed .2 volts. 10 seconds of contact gave the battery pack 13 volts, and the charger accepted it.

Sir, you just acquired yourself a subscriber. Thank you for the upload.

Thank you I just jumped started a Ryobi 18v 4ah battery

I followed your directions and it worked!!! Thank you for saving me some $$$.

Thank you so much . Your method works like a champ .

thank you for the easy to follow instructions

great thanks just brought it back to life

What a good video! Thank you for the sharp concise information!

Dude you are a legend. Thank you!!!

Worked great! Thank you!!!

Thanks so much. Great video.

One of these days gotta try that.thanks 👍✌️

This is a great video fella. You helped me to fix my batteries. Thanks a bunch.

Thank you. That worked perfectly

Thanks sir! This fixed my battery! Much appreciated

Hey, it worked! Thanks for your tip!

Brilliant, worked like a dream

Awesome video! I just saved 2 batteries! Thank you sir. 👍

Wow! Thanks so much for this video. I was very frustrated that one of my relatively new batteries was dead even though the other one that came with my tool at the same time was just fine. Tried your hack and it worked perfectly. So glad to know about this.

Thank you. I ended up using a power supply with a diode inline and it worked as well.

Thank you! I was able revive 8 ryobi batteries!! And 2 Amazon knock off ryobi batteries

Thanks. I just use fully charged battery instead of charger and it worked

Had a dead Ryobi battery. Followed this approach but used a charged good battery instead of a charger. The wires I used were a bit thin so they did start to get a bit hot and started smoking after 15 seconds so quickly disconnected. But that was enough to kick start the dead battery...plugged it in to the charger and we had a flashing green light! Woohoo!

Thanks Mr. vlogger my battery now is working

I took two years of Japanese in highschool, late 90s. I would correct people, it's Ree-o-bee. They told me to tell my story walking. That wasn't very nice.

It worked! Thank you!

Thanks for the assist, broski!

Works like a charm!!!!!

Great trick. I had already 5 deep discharged batteries from Makita. Once I forgotten to charge them (let them unused for several months) I had to order a new third brand one á 35 euro 😢.

It works! Thanks bro 🍻

Great vid....thanks for posting this

Another hack If the bms won't switch the MOSFET on to allow the 20v through you can bypass the MOSFET with a temp fuse. 15a at 70degC. So your protections stay in place. But only attempt this stuff if you know the risks. These batteries can spark like crazy when they explode.

Works perfectly!!!!!!!!!! I had one battery that wouldnt charge and I only used it once. Put the wires on for about 30 sec and BAM! it is now charging!!! I was wondering, could you just put the wires on the battery terminals without taking it apart? 2 wires on neg and the one on pos?

Don’t wire it this way , the circuit is a bcs and a balancer . Shoving volts through the bank kills the battery further . Get a 18650 single cell portable battery bank . Open it up and remove the circuit from case and battery. Connect on each cell SEPARATELY and charge them up to around 3.9v when power is removed ( it’ll charge but you want to remove power and it hold stable around 3.9 v ) . Screw it back together and it will start charging . You must never charge a bank In series and some cells take charge more than others ( that’s the reason why cells charge separately , even a quick shunt across a bank could fry a cell in an instant . If it doesn’t charge then either the bcs is bad or a single cell ( or more ) is bad . Never at any time should you shunt the bank and if you don’t understand why then ask a rc modeller but be prepared to be called a looney if you suggest shunting a series charge

Genius! I gotta try this

I was repairing power tools up until 22 years ago & we didn't have the luxury of repairing battery packs like that & we couldn't be bothered sending them next door to get refurbished because we were working next door to a business who repaired battery packs. If they were under warranty then Ryobi just sent us a new battery & their chargers were a bit crude for their smaller power tools because they only used a DC power pack & battery stand which were replaced under warranty very often. That was up until 22 years ago which was the end of my apprenticeship, battery technology has evolved from NiCd batteries back then to NiMh batteries then to Liion batteries which we have now. The problem with the newer batteries is transporting them because they can't be shipped from overseas with the power tool because they can't fly them overseas by air. Those old batteries are probably worth saving in your own spare time but they were never economically viable to repair at work,my boss who owned the business in partnership with another person ran a maintenance business in the electrical trade but he never managed me during my apprenticeship, someone else did !

Thanks 👍 its working ☺️

This is great, thanks!

thanks for the information

Thank you so much, It works

this method works, thank you

@Home Battery Bank Your a freak'n genius man. Thank you so very much for this awesome hack. You saved me some money from buying a new battery. ..... Rick

Crazy as it sounds, these battery chargers should bring batteries up to minimum charge automatically

Cheers worked like a charm all good 👍👍😜😜

Nice hack, thanks. Worked a treat on my tired 9 mAH big battery as well.

Man changed nationalities and accents in the first seconds. Mr. World wide??? Is that you?

it works, thanks.

Thanks, easy fix

Thank you 🙏🏽 you so smart🤩

Thank You!!

Worked!

Always good to see a worker that reuses duct tape for minor uses. Your trick puts you in my investigate other vids for potential subscription. Question... I have several older sony camera batteries that won't take a charge ... will the same trick work if I can break open the battery case? Lawson Texas

Bro u r genius

Would it be possible to connect the test tab of the charger to the test tab of a good battery while plugging the bad one in (its test tab covered)?

If all the cells are tied together they are going to read as one cell. They have to be separated to read each individual cell