I have two 40v battery/chargers(1 less than 1 year old) both stopped working. It certainly sounds like your charger may need replacing. An issue with this battery…any advice? Thanks for the post, btw. P117 battery charger pdf manual download. In 1 minute increments, followed by a charge attempt. Normally, the battery pack protection circuits will shut off the battery at about 2.7 V to 3 V per cell (13.5 – 15 V for your 18/20 V pack of 5 cells), and allow charging, BUT, when the cells discharge to about 2.3 V each, the battery control system will shut them off, internally, to avoid further discharge from totally “killing” the cells; at that point, the tiny voltage that you see on your multimeter is from the tiny amount of “leakage current” getting through the “kill switch” circuit. I know exactly how you feel. Compatible with all Ryobi 40 Volt lithium-ion tools RY40200 RY40403 RY40204 RY40530 RY40460 RY40180 RY40250 and Ryobi 40 volt lithium battery chargers OP403A OP401A OP406A P137A OP404A ZROP401A OP400A RY40440. I’ve tried storing the battery away from the drill, and truedleaving it in the drill. I can only imagine the joy of living with a wife who knows this stuff……. Thank you :). I left them in the charger several hours just to see if the lights were incorrect but the voltage stayed around 19. tools.) When I use a voltmeter the charged battery reads approx 38 volts. Even if it still doesn’t work, these batteries are worth a few bucks for repair on eBay. Then hold them down again. The charger will plug into any outlet that is of normal household voltage, or 120 volts. So I have some good news for you; it is possible to fix most Ryobi 40V battery problems yourself. My Ryobi 40v charger is flashing red and green with no battery in it. My husband Jim(of exploding battery fame) wants to remind you all to wear safety glasses! It will work with any lithium ion battery but you’ll could have different voltages. Then hold them down again. Has anyone experienced this? Both chargers have the same “manifestations.” This all started after using my leaf blower with all three batteries, and trying to recharge. Full choir too… Are the terminals dirty? You can see a video guide on how to do this here. Does it happen only in hotter weather? I have a issue with one of my 40 volt Ryobi Batteries. If I release the trigger, and tap the outlet or remove and replace the battery it will start but only runs for 30 seconds or so. Ryobi P117 One+ 18 Volt Dual Chemistry IntelliPort Lithium Ion and NiCad Battery Charger (Battery Not Included, Charger Only) 4.3 out of 5 stars 1,261 $39.97 $ 39 . Micah, when all is said and done, a statement like this: That is usually a sign that the battery has had it. Took about a minute. Remove the 2 plastic side pieces. Does not seem to work on a WORX power tool 20v battery…unless I am doing something wrong. The main board has 42 volts. Is the Ryobi One + String trimmer 18 volt 13″ String Trimmer / Edger have the same battery or has design changed so it is easier to remove from trimmer? Use a second healthy, fully charged battery of the same voltage and connect the terminals matching polarity (positive-positive, negative-negative) using wires and leave them connected for a few minutes. What should I do? through ignorance I repeatedly pressed the lever after it first stopped, result is battery works for about 4-5 minutes then stops restarts when I press lever again, eventually stops working. I hope it will not die on me; I am always amazed how long it holds charge. Thanks, again! The green light on the charger and battery flash for hours without charging the battery. Dear Lord, thank you thank you thank you thank you thank you for these tips! Not sure to be honest. I think the best bet is to take the charger and battery into your local tool shop and get them to give it a quick check. Go to Youtube and search “Ryobi lawnmower shuts off fix”. Hey Aaron, So I tried them both in the weed whacker and it didn’t work either. I have a working battery and charger again. ), it shows 4 lights as being fully charged. Thought I had a bad battery #3 did the trick – Thank you!! These can explode into flame, and burn you or your home. The last thing you can try is to put the battery in the charger and then plug it in and unplug it (the charger) repeatedly. my Ryobi trimmer stopped working after the string coiled up twice, jamming in between. Battery shows levels of charging as I would expect. I did take about 30 minutes, (a little less), but it did. I jumped from the good battery charging terminals, to the defective battery +- terminals (with a spark!). ~ karen! Have you got a multimeter to test the battery voltage? You said if solution #3 wouldn’t work for me, I might have a dead battery, which I assumed I did in the first place. It might be 15.2, 15.5 or even 16 or 17v. If you are having trouble finding a replacement let me know and I can help find an exact match, but Amazon should have you covered. Powered up whenever I turn the power bar on with all my other chargers. When we try charging the If the charger is showing both a Red flashing LED and a Green flashing LED at the same time then there may be a fault with either the charger or the battery pack. Your email address will not be published. Press in the release button all the way and PULL HARD. I always like to have a backup – so $75 – $100. Nice job saved me the cost a new battery. Check battery fuel gauge, 3 lights illuminate. Any ideas? Is there a reason you have to take the battery cover off vs just pulsing the charger leads to the battery contacts the way the charger does? I’m definitely not holding my breath on them to warranty replace the two broken ones. Has anyone had experience with this? Good to know. I want to replace them. It works with NiCad batteries, sometimes NiMh and such. No vid :'(. This question was also asked in our facebook group, but I will post the answer here as well for others to benefit: Hi Matthew, it sounds to me like a faulty battery. Is this a symptom of old batteries? so I will continue to love & adore you from afar. Can they be bled down to zero? If you need your replacement Ryobi 40V battery parts in a hurry, then you will want to head straight down to the closest supplier and buy it locally. You do NOT have to buy a new $50 battery. My husband has thrown out lots of those “dead” batteries over the years. So none of your 3 batteries are working? (It think it cost $19.99 or $29.99). Hi Aaron, my 40V battery was working fine and then i dropped it about two feet on the pavement. As Stu said…Karen: hoping that this is not too long a ” saga” for you, or your readers ;-). The second thing I would do is try to ascertain whether it is the charger or the battery that is faulty. When the charger is empty and first plugged in, it showed flashing red light ( the manual says it should be steady red light). I have 3 batteries and it takes all three to do my drive and our elderly neighbors too. Even if you only have a 5v phone adapter, you can do the same thing, but go across the individual battery cell not the whole series of batteries…, What I’m really wondering here is about that “tutor” treehouse. Notify me via e-mail if anyone answers my comment. Hi Bob, if the problem with the charger not recognizing the battery is happening on the level of the board (in between the cells and the stem) then charging from the stem won’t fix the problem. In our home, the highest DC supply I could find was 18V. Thankx again you are doing a great job For a 12 V battery pack, which has 3 cells, the voltages will be more like: ~ karen! I would venture a guess that you want to take it apart and pulse the batteries directly because some modern lithium batteries have computer controls built in to the battery. It is highly possible that your batteries are faulty though. The proper tell is actually power is watts, energy is volts, work is amps. And, I was cursing at the thought of spending big bucks for a replacement – which is not enough. Eventually, this results in enough charge for the battery charger to resume normal charging operation. Also I need to reduce that charging power (currently 80W – even 300W on fast charger not to modify). When it is under load on my leaf blower the battery quickly reads below 10 volts. The voltage on the battery only reads 27volts from the + to the – terminal on the battery. The pulse charging with an old wall brick is good because chances are, the wall brick is current limited. I have 18 volt Dewalt batteries that I have left in the charger for a few weeks with never a problem. Problem solved. First, the battery indicator on the battery does not work. Another of your brilliant ‘stuff’ I can steal. Are you using the bag? Could you please link something similar from Amazon.ca? Glad we could be of help Be sure to sign up to our newsletter here! I’m thrilled to say the Ryobi is charging now, and truly thanks to you! For more info see our disclosure statement. Garage is not heated and I just went out and saw that the charger was red. It’s “defective”. Just touch the black wire to the negative terminal (the one with the black wire going to it) and the white wire (or striped wire) to the positive terminal (the one with the red wire going to it). What does this mean? You have an almost brand new Ryobi battery that the charger won't recognize and won't charge. You just need to do it once. You need to charge the beginning of the process (the cells), not the end (the stem). And here I was just about to go and buy two new batteries. nope, no video. This machine is only 1 year old. Runs mower for 15 seconds. Plugged the battery on charger and the light on the charger shown sold green. Cool! Thank you. Just saw this and tried it…I got a green blinking light! Elefly Dual Chemistry Charger Replacement for Ryobi P117 Charger ONE+ P118 P119, Compatible with Ryobi 18V Battery 12V 14.4V NiCd NiMh Battery P100 P101 P102 P103 P105 P107 P108 with 2 USB … If you still only get a red flashing light and the battery won't charge, boost the battery some more. when i went to charge it, my charger light is green but the cells on the battery do not light up. My fingers often work faster than my brain. On the top you can get to it to remove but there are several rather large solder connections that you will have to unsolder in order to get remove the board to get to the bottom of it. Just cut it off. No stumbling. Any suggestions? Caryl, you are right. The only thing that I can think of is that you have accidentally bumped one of the contacts out of place? They seem to be ok if I take the batteries out right after they are fully charged. Black wire = negative Striped or solid white wire = positive. Battery university recommends not boosting batteries that have been in sleep mode for a week or longer. I have a bit of a problem. That’s a tough one – it could be the battery or the actually trimmer itself. Which ones? I was told my existing battery is still under warranty – I will pursue a replacement as well. Thanks Karen; It made it even moor clear as I viewed you video. My battery is 4 months old and won’t charge. #3bosch/bostic It worked for you because your adapter was 15 volts. My 40 volt Ryobi battery is only a couple years old so I went on line to try to see if anyone else has had the red/green flashing kiss of death charging problem which led me to your site. Anyway, could you please give me some insight on what you think it might be? To wit, this came into my mind: Hallelujah! The light will not come back on unless I unplug the charger for several minutes then plug it back in. The battery works as expected. Whether you have a Ryobi cordless mower, a pole saw or one of the many other tools available, a common problem with Ryobi batteries is when the charger shows green and red flashing lights. The problem is that It cuts off when I first start the thing. If I’m forced to buy another charger, I’ll have spend more $$ on chargers than the equipment alone. In theory the batteries should be fine to sit in the charger. The battery doesn’t charge nor does it work in the trimmer. ~ karen! I learned to unplug the charger on hot days when I was using the battery after that the tool ran fine. Thanks for the feedback Neil. ernie. No, no. Want to guess why?? I’ve been given a Ryobi trimmer with a #OP4026 battery. Have you had any luck contacting Ryobi or is there a warranty on these batteries? Thanks for letting me know that our fixes worked for you! This also worked on my Ikea battery screwdriver. I am trying to determine if I have a bad batteries or a bad charger. my battery is a 2016 battery and it will not charge. When I plug in my Ryobi 40V Lithium Ion battery charger without the battery attached it has a solid red light. if it does then it is most likely a dead battery. How old is it? If it is reasonably new, then it would be best to get both checked under warranty. It certainly can! Good eye! Nice save on the little line with 3 dots is safe. Your RYOBI battery is covered under a three year limited warranty. This is great, thanks for sharing! Step 1. The danger wouldn’t be just from the batteries, but the plugged in power supply as well (with the stripped wires). If the metal contacts on the battery or charger become dirty or corroded, then it can cause the Ryobi charger to incorrectly assume that the battery is faulty. They charge fine and if I used the on a low draw system they work fine, but as soon as I put one in my lawn mower or weed whacker they run for a few minutes… stop… then a minute or two later then start up again. I currently have a Ryobi Trimmer Model P117 18 volt which is approximately 6 years old. Use a battery charger at the 2 amp setting or just put the battery into its normal charger and tap plug the charger into an outlet quickly several times, the proceed to recharge. Did you try the methods of waking a sleeping battery? The Forrat for P117 charger faithfully recreates the Ryobi … I tried method three, and all it did was ruin my charger. I thought that was pretty neat. We are assuming we DON’T have a bad cell, and we are trying to bring up the charge ‘safely’ little by little. But it is possible that for some reason the battery has lost all of its charge causing it to enter sleep mode. Why does this work? Would they work in my mower? A word on quality: typically more expensive batteries do use better quality batteries inside. Let me know exactly how elated you were after you brought your first battery back to life in the comments section. Have you tried option 3? I tried drying the battery out in the sun but no luck getting it to charge. I may even show him how to do it. Tell them your problem, and ask them if you can see and try the battery removal process for each model. 4 years is a pretty good life for any battery – invest in a new one . It doesnt make sense to me as to why it would make a.difference but I’ll try. If the voltage in the pack doesn’t start rising, or the wires you are touching onto the ends of the batteries get hot, STOP!!!!!!! (If you don't have a multimeter skip to, Touching the red probe to the positive (red) terminal and the black probe to the negative (black) terminal, read the voltage shown on the multimeter. You’re crazy and we love you. Since a different charger produces the same results. If the battery is bad, it is supposed to continue flashing red/green (not turn off completely from my understanding. So if you power off the charger for a while then plug it back in it still flashes red and green? They should have new chargers in stock to test your battery on to work out which is at fault. I’m pretty certain my wife of 36+ years wouldn’t approve of my serious proposal of marriage to you, and your husband might not, as well, but just rest content that the sentiment is there. I have a 40 volt Ryobi that displays a 100% charge, but only has 19 volts on the terminals. Does a solid green indicate the battery is charged or a solid red? The video should be there Bobbie. ~ karen! If they are over 3 years old then it is likely just that they are getting old. I tried all options but none worked. Test your the voltage on your battery pack again. Rechargeable batteries like those found in Ryobi power tools can suffer from battery crystallization, or memory. So after the pulse fix. You need to pry the plastic off to get at the screw underneath. 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