- Joined
- Jan 7, 2005
I just bought an APC OEM UPS replacement battery because the APC backup software program was advising there was less that 3 minutes of backup available. The battery was about 6-7 years old. The new battery arrived so I checked each with a DMM.
The old battery read 13.5V and the new battery read 12.6V. Why would the old battery read OK on the voltage and give me an error of a short backup time? I'm suspecting the old battery wouldn't hold the charge under a load but was showing 13V+ without a load on it. Is this a correct assumption?
The old battery read 13.5V and the new battery read 12.6V. Why would the old battery read OK on the voltage and give me an error of a short backup time? I'm suspecting the old battery wouldn't hold the charge under a load but was showing 13V+ without a load on it. Is this a correct assumption?