As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HUB REPORTED SMOKE COMING FROM BENEATH AIRCRAFT UPON ARRIVAL DISCOVERED SMOKE COMING FROM BATTERY VENT PORTS. REMOVED AND REPLACED POSITION 1(P/N 31433-001 S/N 10201305) AND POSITION 2 BATTERIES IAW AMM 24-34-01-2. OPS CHECK GOOD OK FOR SERVICE.