I'd say they're toast!
Yesterday, during the automatic self-test of my #Eaton Ellipse Pro 1600 (DIN) #UPS, it failed and shut my whole network down, ungracefully.
The original LEOCH DJW12-9.0 sealed lead-acid #SLA #batteries aren't holding a (reasonable amount of) charge anymore.
They've been in use since 2020-11, that's over 5 years. Eaton recommends replacing after 2 years.
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