[rescue] Re: [geeks] Dead Smart-UPS 1000

[rescue at sunhelp.org]

> 
> 
> > > However, I plug it in, its DOA - no LEDs, no beeps, *nothing* - should
> > > it at least display SOMETHING on the front panel until the batteries are
> > > charged?  Its sat turned on (and completely drained) in the friend's
> > > garage for about six months..
> >
> > I have confirmed that the Big UPSes (i.e. over 600W) run on thier
> > batteries. If thier batteries are drained, they will not boot.
> 
> half an hour on a car battery charger set  across 12V worth of cell(s) might 
> be enough to get it rumbling.
> 
> for instance, if it has 4 6v cells, disconnect two of them and throw a charge 
> on them in series, this might give it just enough charge to get the POST up 
> and get the charging circut going.
> 
Not if you want the battery to survive... The sealed batteries that UPS use
cant be quick charged.. gas will build up inside and pop the case rather then
the gas being re-absorbed witha slow charge. put a 12V wall wort charger on 
them.. 

Matt