Here’s a nice plot of yesterday’s power outage, courtesy of my server:
Interesting how the capacity drop and the recharge curve are both perfectly linear. Makes me wonder how accurate these curves are… do they really represent measured values or just a simplistic guess by software?
On the other hand, both UPSs ran fine for over half an hour, one supplying a server and networking equipment, another supplying a workstation, monitor, and some peripherals. So I really have no cause to complain.