As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE EMERGENCY EXIT LIGHT ARM AND CHARGE CIRCUIT BREAKER POPPED WITH EMERGENCY EXIT LIGHT SWITCH IN ARM POSITION. THE BATTERIES AT ROW 20 AND 21 OVERHEAD BINS WERE REMOVED AND REPLACED. THE CIRCUIT BREAKER WAS RESET AND THE SWITCH WAS ARMED WITH NO FAULTS NOTED.