This was originally posted on APC forums on 10/20/2012
I had a Back-UPS CS 350 for a while. On Friday, the replace battery came on. So I fitted a new battery.
After plugging into the power again, the yellow "on battery" light came on brightly for a second, then stays on dim.
Now anything not described in the user manual generally means that the circuit board is kaput.
After a few hours, I tested the battery, and it has not been charged.
So I did not connect any load to the UPS.
I had another brand of UPS also fail after replacing the battery. This pisses me off, spending money on a new battery for nothing!
I hope the "enterprise grade" UPS are more reliable.