As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OVERHEAD EMER LIGHTS INOPERATIVE. OVERWING EMER EXIT LIGHTS CAME ON SOMETIME AFTER TAKEOFF RECYCLED SWITCH. ACCOMPLISHED TEST OF THE EMER LIGHTS IAW MM 33-51-00 HAD 2 FAULTS EPSU BATTERY RT & EPSU BATTERY AFT LT. REPLACED BATTERY IN POWER SUPPLY UNITS RT & AFT LT. ACCOMPLISHED TEST OF THE EMER LIGHTS TEST PASSED.