Check out my newest 18650 salvage video: https://youtu.be/yuLdi4oT7xI
Today I will show you how to revive a dead 18650 Li-ion cell that’s being refused by the chargers. This method will work with any Li-ion battery, not just the 18650 cells. Here’s my follow-up video:https://youtu.be/vFmbG8GpS4A if you wonder how much current (Amps) goes through the wire.
Note: this is not a permanent way to charge an 18650 cell. The point of this method is just to bring up the voltage of the dead cell to a point that is enough for a real 18650 charger to accept it and charge it properly. When a Li-ion battery does not have high enough voltage, the charger would not charge it. I think the reason is safety because if the voltage is too low, it might take a risk of charging a NiMH or NiCad cell which are only 1.2 volts each. And if you put a NiMH or NiCad cell (at 1.2 Volts) in a Li-ion charger that charges up to 4.2 volts, all hell will break loose.
Also: don’t overdischarge a Li-ion cells down to below 3V especially below the threshold recognized by the charger. Otherwise, it will not live long. The “Goldilocks” zone for a long and healthy Li-ion cell life is between 30% and 90% charge. Too much charge or discharge would be bad for the cell.
, https://i.ytimg.com/vi/tbEfhPbqTDE/hqdefault.jpg
source
2021-08-17
I have made a detailed video on this. There's a lot more information on this new video: https://youtu.be/yuLdi4oT7xI
Never connect lithium batteries this way. It is easy to overcurrent the good battery and damage it.
I just use a constant voltage / constant current power supply. Set the power supply to a maximum voltage of 4v and a max current of 100mA. This will usually allow for "safe" recovery of the battery. It will never have the same capacity or current delivery, but it will work.
Very tricky yet very effective ? thanks for sharing ?
Very misleading information, once the battery is put under load it discharge very very fast and will be useless for normal use. Might be used for powering an led torch in an emergency.
where r u from man?? i dont recognize ur accent
it will blow up after a few cycles
thanks of this video revive some of my 18650 battery and now i rebuild my electric drill here https://www.youtube.com/watch?v=JMtMMOOah0E
You gave me idea about it
this guy is a solar punk mad scientist
Chinese south African?
Amazing ??
Thanks!
thank yo u for being straight forward about whats goign on here. alot of poeple arent understanding the charger is using the voltage to identify that battery and that is the problem. the cell is not actually bad or broken.
except that you will fuck again your li ion battery if you let the tunigy charger to lipo mode : go in program setting to set lithium to li ion instead of lipo
Thanks for this video
Brilliant!
This worked well! Thank you! I will say I held the multimeter on the old battery after disconnecting from the new one and the voltage was not holding- but is expected from a battery that was left dead for so long.
i’ve fully charged my 18650s and when i test the voltage it drops slowly
The trick of putting rechargeable batteries in the freezer for several hours before charging. Have you ever heard of this? We know the lower the temperature,the less the resistance,as in superconductivity. Opinions?
must say great tip with the magnets 35yrs never thought of tht lol
Nonononono…. you said the lipo was a lion, that is NOT correct and I would NOT suggest jumping a lipo as they are the ones known for exploding
thank you! it worked for me
Bro this worked like a charm! So quick and easy, thanks. You saved me like $50!