As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DCA - MAINTENANCE REPORTED THE LEFT AND RIGHT MID-CABIN BULLNOSE EMERGENCY LIGHTS ALONG WITH THE LEFT AFT CABIN BULLNOSE EMERGENCY LIGHTS ARE DIM. MAINTENANCE REMOVED AND REPLACED THE MID AND AFT BATTERY PACKS WITH NO HELP AS EMERGENCY LIGHTS REMAINED DIM. BUT AFTER A SHORT PERIOD OF TIME, THE LIGHTS BEGAN TO OPERATE NORMAL. MAINTENANCE SUSPECTS THE NEW BATTERY PACKS WERE NOT FULLY CHARGED UP. LIGHTS OPERATIONALLY CHECK GOOD.