As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS - OPERATIONAL TEST WITH THE TEST SWITCH PROCEDURE - MID CABIN EMERGENCY LIGHTS WILL NOT STAY ON FOR 60 SECONDS. ATTEMPTED TO CHARGE BATTERY PACKS WITH NO HELP. REF FIM 33-51-01-103.1 FOR ASSOCIATED LIGHTS TO BATTERY. SUSPECT BATTERY PACK M11613 AND M11612. SUSPECTED BATTERY PACK PN ABS-D717-01-100. REMOVED AND REPLACED EMERGENCY BATTERY PACKS AT LOCATIONS M11612, M11613, AND M11486 REF AMM 33-51-07-902-005-002, OPS TEST OK.