Any ideas? 12V Lithium-Ion Battery Pack. No problem! It charged all the way up before giving me the red/green flashing lights. I need your help. Thanks for sharing your insight. I did take about 30 minutes, (a little less), but it did. Can dropping the battery cause it to be inoperable? 3 good, 2 with completely dead cells, and one with good cells and a bad board. Put it back on the charger to get back to full, start trimming again and it does the same thing. You probably need charger. I hope I can use this battery for both units. Hi Aaron, I have a Ryobi cordless drill, I don’t use it often and it won’t charge it just continues to flash red? Glad it worked! It seems like the battery has gone completely dead, and because the charger is dead (no lights) the battery won’t work anymore either. You should be able to let your battery completely drain if it is used regularly. Just trying to find a quick fix, so I don’t have to purchase a new or used battery! Have you checked the battery terminals? Best regards. I saw one source online that showed the hook up, but it was for a ryobi 40v but the main board inside was constructed different than the board in mine. I had tried option 3 but the battery still couldn’t charge. However unplugging the charger from the 110v for about 30 seconds and then plugging the charger back in, does reset it and it will continue charging for about another 15 minutes. 10-13-2017, 12:02 PM #2. vadimax. It sounds like your batteries may have gone into sleep mode. Could be a dodgy connection between the board and the terminals aswell.. thanks! It doesn’t necessarily mean that it is a faulty charger because the charger will likely adjust the voltage depending on what state it detects the battery is in. The battery doesn’t charge nor does it work in the trimmer. Why does this work? Remember polarity of batteries as lithium ion will blow up if reverse charged. Do you have a multimeter to test the battery voltage? Hi Aaron, I think you are the expert I should ask my question. First thing I would do is clean the terminals on the battery and the charger. Hi Ken, I am not Ryobi – for their support I suggest you try this page: https://www.ryobitools.com/power-tools/support/contact, the charger light changes from red to green within seconds and battery remains uncharged. Now a week later when the battery is placed in the charger the light stays solid green and never flashes. 40W should be perfect even if that take more time to fill. Perform a load test. The weed eater and blower are only 18 months old and not used much. All batteries were only a few months old and the charger less then a year old. I have a Ryobi 40v lithium battery leaf blower. My 40 volt lawnmower is cutting out with a battery level over half. More info here. 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. https://www.essentialhomeandgarden.com/ryobi-40v-battery-problems Both chargers have the same “manifestations.” This all started after using my leaf blower with all three batteries, and trying to recharge. Hi John. When I put it back on charge, it took a charge just fine. I continued connecting/disconnecting for another 10 minutes and it finally started flashing all green without shutting off. My OP400 charger repeatedly stops charging after about 15 minutes and all lights go dark. Thinking the circuit board must be bad, but interested in your thoughts. Thank you thank you thank you! I went to use the drill, grabbed the battery from the charger and it didn’t work. Removing and then replacing the battery does not cause the charger to wake up. why would battery charger light stay green if battery is defective (only charges to 18 v)? Stay safe. Is there no other way to reserrect the battery? A common occurrence? Go to Youtube and search “Ryobi lawnmower shuts off fix”. How old are the batteries? Will the repair be covered under the 5-year warranty ? It isn’t just dead. No light nothing. Also, can I leave Ryobi 40v battery on charger? I was told that this was normal for it to blink for the first twenty minutes. Old 40v battery work either leave it for a couple of months ago the old one back into! Old one battery works fine ) green with no battery in the charger and it can not remove battery! 3 did the trick – thank you thank you thank ryobi 40v battery charger flashing red and green thank you, fix 3. This connected for a while then plug it back on their chargers, the leads... 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