As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONSTANT BATTERY DISCHARGE OCCURRED AFTER TAKE-OFF. SUPPLEMENTAL DATA UPDATE THE MAIN BATTERY AND MAIN BATTERY CHARGER WERE REPLACED. NO FURTHER PROBLEMS WERE REPORTED. SHOP REPORTED NO FAULTS FOUND FOR REMOVED BATTERY AND BATTERY CHARGER.