As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA - SEAT MOUNTED EMERGENCY AISLE LIGHTING FLICKERED BRIEFLY DURING CLIMB OUT. LANDED LGA WITHOUT INCIDENT. FOUND BATTERY PACK AT AB5 1 LOW. REPLACED BATTERY PACK AT AB5 1 AND BOTH AB5 3 AND AB5 4 BATTERY PACKS AND MODULES FOR SEAT MOUNTED EMERGENCY AISLE LIGHTING. SYSTEM GROUND CHECKED NORMAL OPERATION.