APC VA J10 Power Conditioner and Backup Power Question

[Anonymous user]

Hello, I have an APC AV J10 power condtionter and backup unit........it works fine and passes the self test, but when on battery backup it makes a buzzing sound until power is restored and then it's quiet again.........anyone have this problem? the batteries seem fine as I have no low battery light. any help will be apreciated.

[Anonymous user]

Thanks for letting me know........I was chatting with tech support and they said something was wrong with it...........was about to get a new one. Thanks Again

[BillP]

That's normal operation. All of the units do that when they're on battery.

[Erasmus_apc · Accepted solution]

Assumed answered due to lack of customer update/response.