As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELEC LIGHT ILLUMINATED ON LANDING. GROUNDED - YES. ACCOMPLISHED B737-9 AMM 24-31-00 ELEC LIGHT BITE PROC FOUND FAULT CODE FOR BAT CHARGER INOP. ACCOMPLISHED AUX BAT CHARGER OPS TEST PER AMM 24-31-31 OPS CHECK NORMAL. AUX BAT CHARG LIGHT INDIC NORMAL OPS.