Question about Mustek PowerMust 800 (POWERMUST800USB) UPS System
Remove batts, Check battery connector, fuse and batt volts, if you have dummy load (car headlight etc) check batts are working and measure voltage under load.
Also check if UPS needs to be told there are new batts read manual or check support for maker.
Let me know what you find, hope this helps
Thanks for using FixYa
Posted on Aug 02, 2010
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Posted on Jan 02, 2017
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