I dunno if I would really want to fool with keep ingf a buynch or even
one battery topped off and redy. Not particularly fond of the smell of
electrolyte in a living space or long termin my shop or shed....Gell
cells are an alternative, but still require a trickle charge but are
usuallay not obnoxious when it comes to smell and you do not have that
corriosive vapor getting in the area and causing premature rust, nor
the chance of spilling it and eating holes in the carpet etc. I htink
I would look at sealed, totally sealed gell cells.

On Sat, 10 Feb 2007 19:39:53 -0500, Add Homonym's home account
wrote:

KurtG wrote:

Wayne Sallee wrote:

Another thing that can be done is to hook up a car battery to your ups
for longer running time. You could even hook up as many batteries as
you like.


I've never seen a UPS with a 12 volt hook up. I use APC's and even have
a 80# version w/ no hookup.

I was looking into a power failure relay, but haven't made much
progress. I think I'll just build my own as I've been thinking of a
battery bank anyway for other reasons.

--Kurt

The "extended run" or "XL" series UPS'es that APC makes have hookups for
extra external batteries. Of course they are inteded for their APC brand
extended run battery packs (which cost an arm and a leg) -- but I bet
that one could hook up any old 12 volt lead acid battery...



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I forgot more about ponds and koi than I'll ever know!