As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT UNDER IMC WHEN LOW VOLT LIGHT CAME ON AND VOLTAGE DROP TO 23.0 VOLTS. PILOT SHUT EVERYTHING OFF AND DECLARED AN EMERGENCY WITH CASCADE APPROACH. LANDED WITHOUT INCIDENT. PART WAS UNDER WARRANTY SO COULD NOT DISASSEMBLE TO FIND OUT CAUSE OF FAILURE, PART IS PROPRIETARY FOR MFG.