[RE-wrenches] Lithium batteries

[William Korthof]

Anyone have experience using lithium batteries for solar and/or backup
power applications?

A friend in the EV development business has access to a large number of
used EV battery packs that still have a good deal of life left in them.
He's looking to find a market for them and solar/backup power seems
potentially like a good application.

The batteries were configured as ~100 amp-hour nominal blocks, consisting
of 2 series cell blocks (4.1 vdc open circuit).
The simple path I suggested was to start with 7-block packs (14 cells = ~56
vdc full charge) and battery management control.
The battery performance is excellent, and they should have a lot of life
left, and are move compact/light weight than leads
(something like 50% less volume, and 70% less weight)---but are more geared
toward power and high voltage to match the
needs for automotive usage. Penciling it out, it seems plausible that these
could be priced competitive with new lead group
31 lead acid batteries...

I'm curious what is available (lithium) and if anything has a track record
or cost benchmarks. Also curious what kind of
interest there might be in this kind of secondary battery offering.

William Korthof
Sustainable Solutions
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20130220/f5e80325/attachment-0003.html>