As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A WEAK BATTERY CAUSED A CIRCUIT BREAKER IN THE CHARGING SYSTEM TO TRIP. AFTER REDUCING ELECTRICAL LOAD, THE PILOT RESET THE CIRCUIT BREAKER WHICH SUBSEQUENTLY TRIPPED A SECOND TIME. THE CASE OF THE CIRCUIT BREAKER GOT HOT ENOUGH DURING THE EVENT TO RELEASE AN ODOR AND SOME LIGHT SMOKE. THERE WAS NO FLAME, AND ONLY MINOR DEFORMATION OF THE CIRCUIT BREAKER CASE.