As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND AIRCRAFT WITH THE BATTERY SWITCH ON, AND GROUND POWER OFF, ELEC CAUTION LIGHT ILLUMINATED WHEN GROUND POWER ESTABLISHED. ACFT GROUNDED. BITE SHOWED AUX BATTERY CHARGER INOPERATIVE, STATIC INVERTER INOPERATIVE. CLEARED FAULTS IAW AMM 24-21-53. BATTERIES CHARGED IAW AMM 24-31-11.