As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY BATTERY PACK M1676 AT STA 500C+7 WILL NOT HOLD A CHARGE. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK M1676 AT STA 500C+7 IN ACCORDANCE WITH AMM 33-51-06-960-805. OPS CHECK OF BATTERY PACK GOOD IN ACCORDANCE WITH AMM 33-51-06-9 60-805.