As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 1450Z AT CRUISE AT FL 380, 246KIAS, MACH .78 THE L AFT LIGHTING - EMER CHARGER CB P18-3 ROW A TRIPPED OPEN NO RESET ATTEMPTED, AISLE PATH LIGHTING ILLUMINATED ROWS 14 ON BACK. FOUND BAD BATTERY AND BATTERY CHARGER AT ROW 20ABC. REPLACED BATTERY AND CHARGER FOR EMER LIGHTS MID CABIN A/C LEFT OPS CHECK GOOD C/B RESET & STAYS IN. EMER LIGHTS CK GOOD. REF TASK 33-51-06-900-806.