[Asterisk-Users] UPS rating for SOHO asterisk box

[Walt Reed]

See http://www.windsun.com/Batteries/Battery_FAQ.htm

Even "deep cycle marine batteries" can be crappy, with many actually
being a combination of starting / deepcycle. The primary difference
is the plates. Good deep cycles have thick lead plates. Industrial
batteries should last longer. Car batteries typically have "sponge"
style plates which offer high CCA but low life in deep cycle
applications.

UPS applications are very hard on batteries unless your power is REALLY
bad, and goes out all the time. Lead-Acid batteries need to be used.

On Tue, May 31, 2005 at 04:17:41PM -0400, Nick said:
> Use "deep cycle marine batteries" or similar.  Car batteries arn't
> really designed for "long low power", they're designed for CCA, high
> output short burst.
> 	Nick
> On Tue, May 31, 2005 at 01:22:09PM +0400, Jean-Michel Hiver wrote:
> > 
> > >Another thing to consider regarding the ups is the runtime, depending=20
> > >on the hours and minutes you want the ups to supply power to your=20
> > >asterisk box, you may need to add more batteries to the ups.
> > 
> > Regarding this, I have done this hack yesterday:
> > 
> > - Remove the battery from an existing UPS
> > - Rewire the UPS onto biggest car lead acid battery (12v) you can find.
> > 
> > Et voila! Bigger capacity. Put the batteries in parrallel and you do get=20
> > monstruous UPS capacity... the only trouble with it is that re-charging=20
> > the batteries may take some time.