[ausev] Batteries

[Sarah & Erik]

Hi Gil,

Some of the advice may cross over to other chemistries, but I wouldn't
count on it. The reason there are so many things to think about for
lead acid batteries is that they tend to be the less expensive route,
and the flooded variety are also quite abuse tolerant. Other
chemistries tend to lend themselves to OEMs, who design good battery
care into their vehicles. The BRUSA chargers are fully configurable
for a wild array of parameters and do everything you could want with
batteries, and cost a lot. Flooded batteries and the vehicles they go
in tend to be on the other side of the spectrum.

Generally though, be careful as your pack gets very low - no batteries
enjoy cell reversal. And most chemistries tend to have an upper
temperature bound they can be charged and used at.

Erik

On Dec 31, 2007 1:23 PM, Gil Dawson <Gil at gil.dawson.name> wrote:
> All this  advice on batteries and discharging, sulfation and stuff
> applies to Lead-Acid batteries.  Does this advice apply to the newer
> chemistries, Nickle-Metal-Hydride and Lithium-Ion?
>
> I had to replace the 26 Lead-Acid batteries in my truck with 26 NiMH
> ones at 16,000 miles.  Couldn't get new ones, so got some used ones
> with probably 30,000 miles alraedy on them.  I'm up to 27,000 and see
> no sag in performance yet.  Those lucky Rav4EV drivers who got to buy
> their cars must be pushing 150,000 miles now, some, at least, with
> the original NiMH batteries, as far as I know.  Anyone hear different?
>
> --Gil9
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