Al Lumas via EV wrote:
The six Deka 8G31 Group 31 GEL cell batteries in my 2005 GEM e825
Utility NEV lasted eight years.
And then, the best deal on six new ones was from a solar system
component distributor here in the south SF Bay area.
These Deka 8G31 gels are very good EV batteries, but only if carefully
used. They are sealed, provide good range, and can last a long time --
as long as premium flooded, and much than AGMs.
However, you need to understand that gels are *low* current batteries.
You cannot draw high currents, or charge them to high voltages!
You'd want to turn down your controller so your peak battery current
does not exceed about 100 amps. And, you have to make sure your charger
never ever overcharges them (see manufacturer's recommendations). A
standard flooded or AGM charger will quickly *destroy* them.
--
A designer knows he has achieved perfection not when there is
nothing left to add, but when there is nothing left to take away.
-- Antoine de Saint Exupery
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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