What was found
WHILE IN FLT, THE BATTERY CHARGE ANNUNCIATOR 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. REPLACED BATTERY, RAN ACFT SYS, OPS CKS NORMAL, COULDN'T DUPLICATE.