As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING EMERGENCY LIGHTING OPS CHECK; WHEN LIGHTS ARE TURNED ON; AFTER APPROXIMATELY 5 SEC THE EMERGENCY LIGHTS COMMON TO R/H OVERWING DOORS GO OUT. TROUBLESHOT AND FOUND M1669 TO BE BAD. TROUBLESHOT AND FOUND M1669 CHARGER TO BE BAD, VERIFIED. REMOVED; REPLACED & PERFORMED GOOD INSTALLATION TEST OF EMERGENCY LIGHT BATTERY CHARGER M1669 PER AMM 33-51-06-960-806. VERIFIED CORRECTIVE ACTION COMPLETE.