Cells that are at voltages all the way down to 1V can be successfully revived by trickle charging them with small currents like for example 100mA for several hours. I have revived several cells in that way. Some of them have a reduced capacity but are perfectly usable otherwise. Cells that are at 0.00V are totally dead and I had no success reviving those. But if there is some voltage, they can be slowly brought back above 3V.
@BuildItnow8 ай бұрын
Thanks for the info!
@Lucasimo3 жыл бұрын
When I salvage 18650 cells (from faulty electric bike batteries), I always make sure I run them through a discharge testing device (this is a very useful thing!). If they closely match (85-90% match) their capacity rating at 1C and 2C discharge rate, then they are kept. Any that fail this test are taken to my local battery recycling centre. Usually I find around 60-70% of the cells inside a faulty e bike battery are good to continue using. Power tool lithium batteries don't tend to yield good results. I get around 30-50% good cells from these. Most likely because power tools draw more bursts of high current which stresses the cells. 18650s are very useful for a wide range of builds. For me, I have made mobile phone charging power banks, batteries for our LED Tron costumes (we can often be clearly seen at Glastonbury festival as a duo) and currently for a large power wall in our camper van.
@kwadkrazy60783 жыл бұрын
Actually the 18650 cells can discharge all the way down to 2.5v before they take any damage, but below that you gotta be careful with them. So a 2.6v cell is actually perfectly usable, and probably as healthy as a cell you find at 3.3v, although you can't judge by the voltage alone
@fedexsmartpost22996 жыл бұрын
Another pro tip: Salvage electric mobility scooters, I got 35 high quality Panasonics from one.
@Bobylein13373 жыл бұрын
You mean "salvage" as you find them on the streets for "free"?
@SharonKlinkenberg Жыл бұрын
Thanks for the vid. Do you need to take the metal plates off, the ones that you cut with the plyers. If so, how?
@nelchan2421 Жыл бұрын
TIPS : If you're planning to reuse it as a power tool battery and you don't have a spot welder, just leave the old nickel strip on the battery so you can solder it correctly and securely.