On Sat, 08 Oct 2005, Henrique de Moraes Holschuh wrote:
The UPS is undergoing a full cycle now (AKA I pulled the main power), so
that I can time the power-offline uptime of the unit again. I will report
back if it is significantly less than what it used to manage when new.
The batteries (there are two sealed batteries in the unit) do not appear to
have degraded much in one year of service. Test performed at moderately low
load (~ 40%) because that's the data I had from one year ago. They lasted
for 59 minutes and a few seconds before hitting the "warn load to perform
clean shutdown" threshold (120 seconds of battery life at current draw
rate).
Braindead racoon shutdown scripts have convinced me to kick that margin up
to 5 minutes, though.
Anyway, the batteries probably have degraded < 5%, but without a calibrated
load I can't properly test anything with more precision (and I can't time
travel and do that test one year ago :-) ).