As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POWER SUPPLY BATTERY PACK CAPACITY CHECK PROCEDURE. ALL LIGHTS ASSOCIATED WITH POWER SUPPLY M33098 EXTINGUISH WITHIN 5 MINUTES OF OPERATION. REPLACED THE BATTERY PACK ON EMERGENCY POWER SUPPLY M33098 LOCATED BEHIND OVER DOOR PANEL R2 DOOR, IAW AMM 33-51-06. OP CHKD GOOD.