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RE: Re: APC Batteries.
HI, Dom!
Just got back home after the holidays and am catching up on email.
I did look at prices for deep-discharge type batteries, and was a bit
suprised at how much they cost compared to car batteries. I think my first
experiment will be with one of my working UPSs (internal batteries) and see
how long it runs without AC power with only the water heater controller as
a load. ;-)
Thanx to all for their input on my project!!!
Guy Clark> To: ukha_d@xxxxxxx> From: dom@xxxxxxx> Date: Fri, 21
Dec 2007 20:59:53 +0000> Subject: [ukha_d] Re: APC Batteries.> >
<idiot alert!>> I modded a 700 to use 2x 12v car batteries, in
series, and got great> run time (over 2 hours, on my rack), but the
first really deep cycle> killed both the batts.> > The APC 700s
are pretty smart, and learn the charging profile of the> batts, but
it'll still let them discharge fully - which in my case was> too
much.> > Gel cells don't mind deep-cycle, so this should work
perfectly. and> you don't need any baking powder :-) [don't ask!]>
> Dom>
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