On Tue, 25 Jan 2005, David Brodbeck wrote: > > From: Peter Svensson [mailto:[EMAIL PROTECTED] > > 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.
The rackmount models indeed run way too hot and they do have a shorter lifespan. Some of the non-rackmount models have fans as well. I was thinking more of the electronics quality than the batteries. The small APC units are not as well made as the larger ones. According to our supplier for large ups:es a raise from 25 degrees C to 35 degrees C halves the battery lifespan for the regular batteries. Peter _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
