What these things really need is a quiet occasional chirp to notify me when their batteries are dead and need to be replaced. I've had too many instances when the power does go out and the backup units fail because of an old battery I didn't know was dead.
The APCs and Lieberts that I at work do that, come to think of it, my little APC at home does it too. It sounds an alarm for about 10 seconds and then beeps every now and then.
How reliable is the power over there? I get 2 or 3 power cuts/brown outs a year.
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