As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 6.5 HRS INTO FLIGHT BATTERY DISCHARGING ALERT ILLUMINATED IAW QRH, DIVERTION INITIATED, AFTER 5-7 MINUTES THE ALERT WENT OUT. ELECTED TO PROCEED TO DESTINATION. VOLTAGE WAS CONSTANT 33 VOLTS DURING AND AFTER THE ALERT. ILLUMINATED AGAIN ON SHORT FINAL FOR APPROX 10 SECONDS. REPLACED RELAYS R2-5142 & R2-5145 REF ESPM 7 WDM 24-62-11. BATTERY CHARGER RELAY ADJUSTMENT AND TEST SATISFACTORY REF MM 24-34-01-2.