Revive your batteries. Stupid youtube....

[izeman]

Feel free to comment:
https://youtu.be/MdyQOivH2K0

Stupidity rules the world...


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[whereswally606]

like one of those "a little knowledge is a very dangerous thing" situations.

He had some pretty basic tools.

I wonder what the charge rate is between them (be interesting to see a watt meter between the parallel wires of the dead and fully charged one.

Also i found it funny/scary him using a plastic bag for "safety reasons". maybe an ammo can, fibre glass bag but plastic bag?

needless to say i wont be following him on Youtube or taking his advice.

 

[redilast]

A very bad idea. From everything I've read you never want to try to charge a Li-ion cell that has been discharged <1.5v for over a week. If its been a short amount of time and you wish to try to recover the cell/pack you also do not want to follow this guys method. You want to charge the cell very slowly at 5-10% of your normal charge rate until the cell is back to above 3v. If you can not acomplish this with a charger use a digital bench powersupply which does CC/CV.

 

[wesnewell]

The thing is is that you don't know the actual charge of the so called dead battery since it's too low to register. Its soc may have been just under the threshold where the tester recognized it. I've charged cells a low as 2.75V and never had a problem with them. I've also depuffed many a cell and reused them for years.