As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BATTERY / CHARGER: BAT OTEMP R CAS MESSAGE DISPLAYED AFTER TAKEOFF. BAT TEMP FLUCTUATED FROM 52 TO 67 C. // SIGNOFF // INPSECTED RH BATTERY TEMP WIRING. NO DEFECTS NOTED. SWAPPED LH AND RH BATTERIES FOR TROUBLESHOOTING. REPOSITIONED BATTERIES BACK TO ORIGINAL LOCATION. REMOVED AND REPLACED RH BATTERY REF. CE-680 M/M 24-30-05. OPS CHECK GOOD. PERFORMED GROUND RUN. BOTH BATTERY TEMP EQUAL DURING GROUND RUNS. NO DEFECTS NOTED.