As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1137 PHL-DFW - EEL - FLIGHT ATTENDANT REPORTED THAT THE CABIN EMERGENCY LIGHTS WERE FLASHING ON AND OFF DURING DESCENT AND LANDING. MAINTENANCE PERFORMED A BITE TEST WHICH FAULTED THE LT AND RT BATTERY PACKS. RESET BATTERY PACKS. OPERATIONAL CHECKS WERE GOOD. (S)