As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN FLT, THE BATTERY CHARGE ANNUN ILLUMINATED. CREW PROCEEDED TO DESTINATION, LANDED SAFELY WITH NO FURTHER INCIDENT. THIS BATTERY CHARGE LIGHT ILLUMINATION IS CONSIDERED A NUISANCE WARNING, CAUSING SERIOUS DISTRACTION TO THE PILOTS. REMOVED AND REPLACED BATTERY