[chbot] Resurrecting used 18650

[Robin Gilks]

> A friend of mine gave me a stack of old laptop battery packs, with
> several 18650 each. Some packs had cells showing heat damage - I'll
> bring those to show at next meeting. There are about 30 cells from packs
> with no visual damage, and I'm thinking to try and find out what
> capacity they might have left in them. Several of you have done this
> before.
>
> Currently cell voltages are between 20mV and 2.6V. What would be the
> best charging strategy/algorithm for trying to revive these cells?
> Is there any increased risk of cells overheating/catching fire, or
> leaking? I have this expensive MC3000 charger where I can program pretty
> much any parameter, but I'm less keen on having it smoking...
>
> Thanks for any tips etc.,
>
> Volker
>

You might find the following useful to identify the cells

https://docs.google.com/spreadsheets/d/1fYjDxxCJXfm2wdpGWCaOUGq8V8TOEgsnplHQa4YQpRQ/htmlview


-- 
Robin Gilks