Rescue drained lipo safely - charge dead lipo cell with lipo too low error and lipo charging error for dead battery Gens Ace Imars charger - alnk.to/esTlCSC Chargers at Amain - alnk.to/4BCUHcG Batteries at Amain -alnk.to/cHJLOKG
So... let me say this: I ran a hobby shop, and been doing rc shenanigans for 30+ years. I've saved countless batteries for customers this way, but didn't tell them how (for safety reasons). Most ran their cars until they wouldn't move, which once explained, they didn't have any more issues. Some did leave them on, but again, explaining to them proper care it's critical. I have saved many with a good ole lectron pro. Excellent job on explaining!
Thank you , thank you for real-world industry experience. Yes, there are so many new hobbyists that I felt it important to repeat this message and rescue clearly. I gae mini rc cars to a couple family friends and they both killed their lipos. Never ran them again I visited and fixed. This is a key problem of the hobby since it's all too easy to do. In the future, all rc vehicles will have an onboard battery management system that will prevent this. Looks like most drones already ahve it.
@@RCReviewChannel Absolutely! Going back to when nicad was the only choice, you monitored those constantly, and before digital metering, you gauged how charged they were by cell temps. (Good warm battery was charged). I'd you unplugged it early, or only ran it half, the cells would develop a false charge memory. With 6-10 minutes being the max, you couldn't afford to do that. When I raced in the 90s, sanyo released their 1700mah scrc cells, which were the best! Then they bumped to 2000mah, which was "unheard of! ". Ohhhhh how times have changed, and for the better. We need the drone battery tech for our new enthusiasts tho, couldn't agree more
I have a cnhl black 6s lipo battery. 1500mah (I think 100c). I've owned it for like 2 weeks or a month. I flew it/charged it about 10 times. I've never wrecked it. I balance charged it to storage last time I flew(3.8v). Then I set it on my kitchen table for 2 days since we have had bad weather I couldn't use my drone. Today when I plugged it in to charge I see one cell is at 1.1v! All the other 5 cells are still at 3.8v What the heck happened? This was a 30$+ battery I can't afford to keep making mistakes for this cost. Can I possibly save my battery? Should I jus follow this video instructions?
@@twisterzman is there any risk of the battery catching fire while on my drone? I don't mind risk while charging, I'll keep an eye on it and throw it out the window if it gets sketchy lol. If it fires off mid-flight tho I can't afford to fix the drone it'll ruin 😅😬
Great info! My only recommendation is putting a lipo checker on the balance plug before charging on nimh settings. I work for a LHS and we do that so we can monitor the cells coming back. It helps eliminate some of the guess work of wondering if you have a bad cell.
Great suggestion!!!! My other technique for safety is to connect the balance port to a second charger to view the voltage of each cell while it's charging with the first one.
Totally saved my day!! Accidentally left a battery plugged into my Slash, thought I roached a battery I’ve only used for a dozen cycles or so. Thank you!!
Thanks for the advice. I left my lipo plugged into my crawler for a few days. This vid helped recover my Lipo! I would have liked to have done this outside or Lipo in a Lipo bag for safety.
WOW BRO !!!!! You are Awesome!!!! I literally had a 3S lipo battery that stopped charging 2 yrs ago and your EXTREMELY informative video just saved my Lipo battery THANK U THANK U ...that was absolute genius!! I would have never ever thought to try it on NimH ...it totally worked exactly like u said 🥳🥳🥳🥳
Video got cut off. Here's the info: Proceed at your own risk and be very careful if a cell has died or is defective. Reasons why battery won't charge: 1) no lipo cut-off on esc 2) ESC was left on. Or ESC switch is electronic and slowly leaks energy from battery. Must unplug the battery always 3) One cell in the pack has died. If this is the case, DISPOSE OF THE BATTERY. Check each cell with a balancer and monitor that it stays balanced after recovery. Can use a balance checker or a 2nd charger to monitor cell voltage while doing this NIMH method. Be very careful, monitor the battery closely after recovery and proceed at your own risk.
wow. u just saved my ass man. had lost my very first lipo to over discharging one cell when i didnt know much about that. now that i got a proper charger not the initial one i got that didnt even have a screen i thought to just try it out and viola. we dont have fpv shops here in nigeria and takes a lot of effort and waiting just for stuff to arrive so thanks a lot for the tip.
Thanks bro.. I just revived a battery that I thought was completely dead and wouldn’t charge for months! The error I was getting was “no balance lead detected” so I wasn’t sure if this would work. Did it at 2 amps for about 2min and boom. Back to Lipo and it’s now charging!
Thanks a lot. Its working and safed a nearly new Lipo. Its my first 3s Lipo i bought a few weeks ago... 2s lipos are easy to rescue. You just need one of these cheap usb-chargers which are loading by using just the ballancingport.
This saved one of my batteries it was giving me a balance connect error I used this tip and fixed it first try I appreciate the time you took to walk me through it I thought I was going to be out another $100
Wow thank you so much. I’ve been trying to resurrect this $200 battery for the past four days after watching your video and trying your method it is fixed. I really appreciate this video.
Thanks a lot!! I ordered a Losi mini B that came with a Spektrum 810mah smart battery and ran the car one time. I charged it back up and left the battery plugged into the car. I went to turn the car on to go play with it a few days later and it was completely dead. The lipo was at 0.7volts when I tested it with my volt meter. So I decided to order a replacement. The replacement came in the mail but would not take a charge either and after testing the voltage the new one was at 1.1 volts... I was pretty bummed out to say the least. This method brought both packs back to life and I cannot thank you enough for sharing this info.
I can't believe it worked. I got a few lipos with the pur have of a used Arrma Felony. They were dead and wouldn't read on my charger. This just saved those batteries. So now with the two zeee 3s 7200mah and these I now have extras. Thanks man
Definitely worked for me. Left battery connected to car overnight and it drained my battery - 2nd time it happened. First time I chalked as a loss. This video brought me back this time.
I am new to FPV, I had 4 batteries that I let discharge to the range of 1.7 to 2.4 volts, and wondering for a few hours why they wouldn't charge - 2 were Tattu R-Line 1400mah 6S's, the larger dead beasts were R-Line 2200mah 6S's - Didn't take me long to get the 'bad news' that these 10-day-old batts were cooked and done. I've since bought one of each new, and now when I'm working on stuff, there's a voltage checker with an alarm on each one at all times, and any other ones that are closing in on a 'must STO charge' situation. After finding this video this afternoon, I want to thank you for helping me salvage more than $320.00 CDN worth of great batteries. I understand how careful anybody must be with this solution, and I'd be content if I NEVER have to do it this way again, but hey - what I was convinced was lost, is now found! They are revived, alive and in safe storage, and I feel safer ... so what can I say - this is awesome friend ... I express a mountain sized THANK YOU to you sir!!!
You are most welcome my good man. It is so key to learn how to ressurect batteries that won't charge. And it's good to know when they're dead and dangerous as well.
I appreciate the re upload ! Went on a weekend Camping trip with my wife and kids and just returned today, one of my sons 3S lipo won’t charge and keeps on saying error though the battery tester says it’s within the safe voltage . We’re not sure why, maybe cause it was a bit cold up in the mountain where we went and also while driving the Proline PRO MT 2WD . We never had this issue but thank you very much. I just got those for $80 a pc.
Well I had to do this for a second time 😂 thank the rc gods for you man. Used your video first time this happened and came back because I don’t it again. Left my leads on all night after a drift session. Woke up to a 1.5 reading on each cell. I was sad for a split second 😂 then I remembered I could save it. Thanks again for the amazing content. I’m sure I’ll be back 😂😂😂😂
Thank you very much, it worked on Absima 3s 6000Mah battery. I connected the battery to HPI reactor 600 NIMH and it really worked. It charged it to be able to charge normally afterwards LIPO.
Thanks for posting this, this info is worth gold! 😎 👍 My question is, will this still work when it's only one cell that has dropped way below the 3.2 mark? I have a 6S lipo which that happened to, a CNHL 6200mah 90C Racing Line lipo, not cheap lol. I was almost just gonna remove the bad balance lead & rewire it to a 5S (1x6 connector) and use it as a 5S lipo. Thanks again for posting this!👍
Awesome save! I just tried this with an Elite Force 11.1, 900mAh, 3S LiPO, using a Tenergy TB6B charger. No issues with the NiMH charging, although I went to over 10V (not 9.6 as you recommended), now charging on LiPO mode. So far so good! Originally discharged too far because left the battery plugged into my airsoft rifle overnight (tested as 3.4V). A new one of these specs tests at 12.3V when full.
I have just recovered an almost new 3s 1300 lipo using this method and was surprised how fast the NiMH recovered a completely dead cell at 0.4 charge rate so beware anyone trying this as it only took a few minuets ! I have used this method before with same results and used this video as a reminder for safety Thanks.
Yet another good information video for me being a newbie to lipo the most important information being possible preventing it happening in the first place was at the end of the video which unfortunately cuts off before you finished your sentence. So now I'm really curious what was the 2nd reason?
uggh, cut off again. #2 reason - forget to turn off ESC. Or ESC switch is electronic and always draws power. Solution is to unplug the battery, always.
Thanks for this sir. Just experienced this issue for the first time trying to charge a brand new battery an hour ago and was thinking the battery is faulty maybe. I will try this 👍
Thanks for sharing this great information to recover a LiPo. I accidentally took a battery that was in storage mode and garbed it to center a servo and test motor direction. Voltage dropped to a level that my charger wouldn't charge. It would be nice if someone came up with a charger that had a rescue button and circuitry that could monitor voltage during the recovery process. I'm going to give it a try to recover this battery as it's only been used 2 times. It's strange that the only 2 batteries that I have lost due to low voltage are the 2 that I put in storage mode. I only have 4 batteries in total and the 2 that I continuously use are in perfect shape. It could just be the charger I'm using. When I look at the voltage of the 3 cells 2 are at 3.8 and one is at 0.
I have known about this method for a while, but thankfully haven't had to use it much. I bought 4 batteries from a reputable company about a month ago. They were 5200mah 4s 80c packs. Wouldn't you know that every single pack was dead! I mean too dead to even power the cell checker. I had never experienced this many dead packs in one sweep before. I was going to throw them out, but I couldn't help trying to revive them. End result? I charged and balanced all 4 packs! I also discharged them at 5 amps, charged again, and then discharged at 10 amps! I'm shocked honestly. No telling how long they were dead before I received them, but here we are.
Awesome video, thank you. My JRX2 just stopped, I took out the battery (Reaction2 800 mAh 2S 50C) right away and wanted to charge it and got that error. So I checked the cell voltages it was 1.96 and 2.34 V. So extremely low. Now the battery was left to rest for about an hour and gave me voltage readings of 3.04 and 3.1 V. I just started to charge it and it is seems to go as it should. I am wondering what is going on here. The car ist stock (has SLT 25a 2in1 receiver/ESC).
great video! so I may have a brand of lip where one of the cells is dead too.... any suggestion on how to rebalance them? I worried about doing this method only because the other 2/3 cells might get too much juice? thanks again!
If one of the cells is dead, while the others are ok, you most likely have to dispose of the whole battery. There is no way to fix that and using it can be quite dangerous.
