[Troubleshoot] UPS is Not Working!

Hello members,

I’ve got a APC UPS BE500-AS that’s has been left alone for a few months.

When I wanted to use it, I realized the internal lead acid is already flat, and I cannot charge it up with a lead-acid charger.

I bought a new lead acid battery to replace the internal one. It worked fine for a few days. After that I cannot get it to power on anymore.

I’ve tried the circuit breaker switch on the side and that does not help.

It is possible that the UPS is not charging your battery. Have you checked for loose connections and looked at the circuit board for any fuses that may be blown?

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