I have a Back-UPS Pro 550. After replacing the battery, I realised that my unit was not charging the battery anymore when powered ON. Tests I have conducted so far:
Based on the above it seems to indicate that charging circuit is OK, but it might be a SW issue or some failing sensor that cuts battery charging ? Is there any reset function or FW update that I could apply ? Anything else I could check / do to fix it ?
The unit is around 5 years old so not covered by warranty but still not that old :-)
You can try and brain dead the UPS to reset it.
See Schneider Electric FAQ FA158947 for instruction.
the basic troubleshooting steps for the APC Back-UPS Pro with ... The Back-UPS is not connected to AC power, there is no AC power ... The battery will not charge if the temperature is over 50 degrees Celsius PupilPath
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