BMS AP9921X-AP9922; alarms “Battery Low Chemistry Voltage”

Issue:

BMS AP9921X-AP9922; alarms “Battery Low Chemistry Voltage”

Product line:

Battery Management System (BMS) AP9921X & AP9922

Environment:

All models, all serial numbers

Cause:

The voltage of a battery is below the threshold for the battery type.

Resolution:

Identify the listed batteries immediately so that system backup time is not reduced. Check for exterior causes of this alarm, such as a loose connection or corrosion on a battery post. If the battery has no external problems, perform a follow-up reading with a battery tester. If a specific battery causes repeated alarms (especially if the voltage continues to decrease), the battery is failing. Replace the battery.

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BMS AP9921X-AP9922; alarms “Battery Low Chemistry Voltage”