As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. EMERGENCY EXIT LIGHTS ON THE FOUR OVERWING EXITS FLICKERED ON AND OFF DURING CLIMB. REMOVED AND REPLACED TWO OVERWING POWER SUPPLIES (BATTERY PACKS) PER AMM 33-51-06. OPERATIONAL CHECK GOOD. SEE ALSO AALA201709079014