I bought two mid range 1500VA APC UPSs to provide backup for our security system, phone system (KSU based), and two NAS drives. About six months after the warranty expired one of them started beeping continuously. It wasn't the batteries, the UPS died. Six months later the second one died.

Replaced them with two TrippLite 1500VA UPSs. I was really happy with those, they did great until one extended outage when the batteries were drained down. When that happened BOTH UPSs died. New batteries wouldn't revive them, they both failed in the same manner by refusing to turn back on. TrippLite tech support said to just buy new ones. What good is a UPS that dies the first time the batteries are drained?

Replaced ONE of them with a CyberPower CP1500AVRLCD UPS about three months ago. So far, so good, for the price I'd be really happy if they last 5 years.

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