Yes, it goes on-battery around once a year; it's plugged into a wall outlet that is fed by a building-wide UPS which fails once in awhile. I generally turn off my equipment when this happens - the computer isn't very useful when the building UPS is down, because there's no Internet - so the battery is never drained all that much.Quote from blackjack007:
did you test that 1997 unit? i'll bet the battery failed and has to be replaced. the lead acid batteries in those things only last 3-5 years even if you never suffer a power outage. if you suffer any, then they last much less

