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since
Crewman
rickapc1_apc
since
2021-06-24
Back-UPS ES 500 - low voltage during blackout
2021-06-29 12:14 AMThis was originally posted on APC forums on 3/28/2009I have a Back-UPS ES 500. During a blackout, the output voltage drops from 120 volts to 90 volts, and stays at 90 volts until the external power is restored a few minutes later. Shouldn't the batte…View more
Posted by: rickapc1_apc in APC UPS for Home and Office Forum
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