As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LIGHT ILLUMINATED ON OVERHEAD PANEL. ACFT GROUNDED. PERFORMED FIM TASK 24-31-00-810-801. AUX BATTERY CHARGER INOPERATIVE, FAULT CODE SHOWED ON DISPLAY. PERFORMED FIM TASK 24-31-00-810-825. AUX BATTERY CHARGER RESET AND OPS CHECKED NORMAL IAW FIM TASK 24-31-00-810-825.