As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT CAME ON DURING CLIMBOUT AT SEATS 3, 4 AB AND 19A B KL, FLICKERED ON OND OFF REPEATEDLY. R & R TWO BATTERY PACKS AND CHARGER ASSY M730 AN D M736 REF MM 33-51-07/ UPON REMOVAL IT WAS NOTED THAT THE TERMINALS ON THE BATTERY PACK WERE LOOSE.