As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, THE BATTERY CHARGE ANNUNCIATOR ILLUMINATED. CAPT RETURNED TO FIELD AND LANDED WITH NO FURTHER INCIDENT. THIS BATTERY CHARGE ANNUNCIATOR LIGHT ILLUM IS CONSIDERED A NUISANCE WARNING, CAUSING SERIOUS DISTRACTIONS TO THE PILOTS. CLEANED SHUNT AND REMOVED AND REPLACED BATTERY.