As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, BATTERY DISCHARGE CAUTION ILLUMINATED INTERMITTENT, THEN CONSTANT WITH #2 GENERATOR AMPS FLUCTUATING FROM 55 TO -5. ONCE ON THE GROUND CAUTION REMAINED ON WITH #2 GENERATOR AMPS INDICATING -5. #1 GENERATOR HAD NORMAL OUTPUT INDICATING 40 AMPS. REMOVED AND REPLACED STARTER GENERATOR IAW AMM 24-30-00, 4-2.