Battery near end of life after 14 days after replacement

[Engel]

I have replaced the internal pack from my APC5000 that has this internal an one Battery Pack 1 in addition.

Confirmed the replacement via display on the APC, also run UPS Self-Test and Runtime Calibration via webinterface. Both are status OK. Also the replacement date got adjusted to the day when I replaced it. Predicted Replacement Date is end of 2023.

But after exactly 14 days I got the message that the battery is near end of life. I already replaced the battery again with a brand new one but the issue came back again after 14 days.

Model

Smart-UPS SRT 5000

SKU

SRT5KRMXLI

Serial Number

AS1820270466

Firmware Revision

UPS 04.7 (ID1013)

Manufacture Date

05/14/2018