Have you ever tested Enerdel batteries?
Lee Hart wrote:
My earliest ones were from a group buy organized by Victor Tikhonov in 2003.
They were white prismatic Lithium-Cobalt cells, in both 90ah and 100ah
models. Some of the 100ah cells were OK (maybe 3 out of 4 worked, but didn't
meet specs). *All* of the 90ah cells were junk. Some leaked, but the main
problems were low amphour capacity and excessive internal resistance.
Resistance on the 90ah cells was so high that they overheated even with a 25
amp load.
Maybe some of the purchasers abused their batteries and caused their
failures; but I certainly didn't.
I've continued to borrow, barter, and buy various lithiums for testing.
Prismatics and cylindrical, LiCo, LiMn, LiFe etc. They have
*consistently* failed to meet specs. Typically, their amphour capacity and
internal resistance are out of spec, with large variations between cells,
and a number of bad cells mixed in with the good. The most recent ones were
GBS 100ah LiFe cells, tested just last year. The only exception has been
A123 3.2v 2.5ah LiFe cylindrical cells; they were consistently good.
I'm forever hopeful that the manufacturers will "get their act together"
and start delivering an honest quality product, and stand behind them with a
warranty. But so far, if I'd spent good money for a full pack of any of
these batteries (except A123), I would have been screwed.
At the moment, I'm considering getting some Nissan Leaf cells to test.
I'm guessing that Nissan is likely to have made a *significant* effort to
get a good, quality product. I just have to make sure I'm not getting
Nissan's QC rejects!
--
If you would not be forgotten
When your body's dead and rotten
Then write of great deeds worth the reading Or do these great deeds, worth
repeating.
-- Ben Franklin, from Poor Richard's Almanac
--
Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.htm
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