As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MESSAGE MAIN BATTERY CHARGER DISPLAYED AND BATTERY DISCHARGE LIGHT EXTINGUISHED. ACCOMPLISHED CHRONIC REVIEW. FOUND DEFECTIVE PIN ON BATTERY CHARGER. REPLACED CHARGER, MSG ERASED AND BATTERY CHARGING OK. ALSO REPLACED THE MAIN BATTERY.