Ian Hooper wrote:
> I haven't given up hope on building packs from commodity 18650/26650
> LiFePO4s though, since some brands aren't too far off TS pricing and
> there are advantages to using them (e.g higher power).
Has anyone done any real testing with these commodity 18650 or 26650
cells? The specs are great -- if you can buy new, high-quality cells.
But these only get sold to big OEMs.
Most of what's being sold to "mere mortals" off the internet are
junk-grade; rejects, old stock, cells from sleazy companies, etc. I've
tried a few to rebuild laptop battery packs, and mostly gotten poor
quality parts. They're OK if you only need a small number, for a non
critical application, and don't mind hand sorting and testing them.
But if you're going to make a large pack with small cells, it is *vital*
to get high quality, highly consistent, brand new cells!
Ring the bells that still can ring
Forget the perfect offering
There is a crack in everything
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