[RE-wrenches] unique battery bank design question

[Hugh]

At 16:48 -0400 1/9/11, Jason Szumlanski wrote:
>1a x 12V x 24hrs = 288 watt-hours on a 48,000 watt-hour battery. My math
>shows 0.6% of the nominal capacity. And that assumes there is no
>charging source present.

Wrong again.  Sorry.

You are taking out four times that percentage out of just one quarter 
of the whole battery.  In four days it will amount to 20% of the 
usable capacity (which is only really 500Ah) of one 12V battery. 
Charging the whole battery will not restore balance unless you dump 
an equivalent 98 Ah of charge out of the other 36 volts, making this 
process at best 25% efficient and probably ending in tears.
-- 
Hugh Piggott

Scoraig
http://www.scoraigwind.co.uk