My SBP seems to have lost 50 to 60% of its capacity. When using it to power my home Theatre system during a power outage, the power percentage meter will be going from 100% down to 60 or 50% then jumps to 2% and then powers down.
I've tried to reset it, but that doesn't work.
I have one of the first ones from the beginning with a low serial number (00048).
Any help would be appreciated.