As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED A MAIN BATTERY CHARGER STATUS MESSAGE IN ADDITION, DETECTED A SLIGHT ELECTRICAL ODOR FOR APPROX 2 MINUTES. FOUND BATTERY EXTREMELY HOT AND BATTERY CHARGER NOT CHARGING. R & R MAIN BATTERY IAW AMM24-31 AND BATTERY CHARGER IAW AMM 24-31. ALL OPS CHECKED NORMAL. NO ODOR OF SMOKE NOTED DURING PACK OPERATION.