Applicable Systems
Symmetra LX
Symptoms
The UPS battery charge is critically low during on-battery operation. Shutdown is imminent.
Possible Causes
- Battery has discharged to a critical level during a power outage
- Battery capacity degraded and cannot hold sufficient charge
Troubleshooting Steps
- Step 1: Check the remaining battery runtime on the UPS display
Battery runtime is critically low - Step 2: Save work and prepare for graceful shutdown
Systems shut down before battery is exhausted
How to Reset
To reset: Restore input power to charge the battery, or replace the battery if degraded.
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Source: APC Smart-UPS User Manual, Schneider Electric/APC
Category: UPS
Published: 2026-10-18
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