[BC] Favored UPS units

[Bernie Courtney]

I think i may have myself a little project here....especially since i
think i have a fairly ballsy APC unit with no batts in storage
somewhere.

Curious about your comment about the cal being bad for the batts, if
your using deep cycle marine battery's then it should be that terrible
for them since they are made to be drained all the way down and
charged back up again when your running trawling motors, etc.

thanks for the info!

bern

On 5/26/05, Cowboy <curt at spam-o-matic.net> wrote:
> On Thursday 26 May 2005 19:51, Bernie Courtney wrote:
> > what APC unit are you using for this, and care to share more specifics
> > on your boat battery setup?  sounds like something that'd work nicely
> > for my home server rack.
> 
>  SmartUPS 1400RM
> 
>  They use a 24 vold battery pack, so.....
>  ( APC tech support insists that the float voltage on a 24V pack is 13.7 V
>  so they are about useless )
> 
>  Chop the connector off the ups batts when they died, and spliced
>  parallel #8 ( it's what I had handy ) to the pig tails for + and -.
> 
>  Two Everstart 100AH deep-cycle boat batts in series to the doubled
>  #8 "extensions".
>  Just ran the wire through the batt access door, and left it open.
>  Could plug factory batts back in at any time, but they cost as much
>  as the boat batteries, and they are only 7 AH !
> 
>  Took two or three power failures to calibrate the unit, as a cal run isn't
>  intended for batts this large, and a cal run is bad for the batts.
>  It still only shows about 1 1/2 hours run time on 100% charge at
>  27% load ( three machines, 17 inch CRT monitor and room light )
>  but actual power outages show about 6 hours real run time without
>  the room light and CRT.
> 
> 
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