Smart-UPS On-Line with Li-Ion batteries reports "Error B.08" or inaccurate runtime

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Issue: Smart-UPS On-Line with Li-Ion batteries reports "Error B.08", or shows inaccurate runtime remaining on the UPS LCD display, when XBP48RM2U-LI battery pack is connected.

Product Line: SRTL1000RM4UXLI, SRTL1000RM4UXLI-NC, SRTL1500RM4UXLI, SRTL1500RM4UXLI-NC, SRTL1000RMXLI, SRTL1000RMXLI-NC, SRTL1500RMXLI, SRTL1500RMXLI-NC, SRTL2200RM4UXLI, SRTL2200RM4UXLI-NC, SRTL3000RM4UXLI, SRTL3000RM4UXLI-NC, SRTL2200RMXLI, SRTL2200RMXLI-NC, SRTL3000RMXLI, SRTL3000RMXLI-NC

Resolution: This is addressed in UPS firmware version 15.3.

Restart the UPS, then update the UPS firmware to the latest version. Refer to FA16473, FA279197 or FA170679 to update the UPS firmware.