Review: Eaton 5S 1000 LCD Uninterruptible Power Supply

Runtime On Battery

According to Eaton's published numbers, the 5S 1000 can provide close to 15 minutes of standby power with a load of 300 watts -- half the unit's rated maximum. To test this, we connected a 298-watt load to a fully charged unit, cut AC power and clicked our online stopwatch. The power button flashed green and the alarm beeped every 10 seconds for the first 16 minutes, then became more rapid. At about 18 minutes, the system ran out of gas. We conducted separate tests of the software, which worked well on Windows and Mac OS X. More on the software next.

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