[Asterisk-Users] UPS for Asterisk

[David Brodbeck]

> -----Original Message-----
> From: Peter Svensson [mailto:psvasterisk at psv.nu]

> The SmartUPS ups's from APC that are >= 1kVA seem to be of a 
> lot better 
> quality then their smaller siblings. We have lost none of the 1kVA or 
> larger ups:es while several of the smaller ones have died of 
> electronics 
> failures. The larger ups's seem to have 5-year batteries 
> while the smaller 
> ones have 3-year batteries.

Just a counterexample -- the batteries in our 3 kW rack-mount SmartUPS only
lasted three years before one of them failed.  They were a real pain to get
out, too -- the failed battery had swelled up and wedged itself in the
battery compartment.  The rack-mount UPS runs around 120 degrees F inside
and that seems to shorten the battery life.