As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PRE-FLIGHT, FOUND BATTERY VOLTS READS ZERO. REMOVED 02 BATTERY IN ACCORDANCE WITH A/M/M 24-34-01. CHARGED 02 BATTERY IN ACCORDANCE WITH DC-10-A/M/M 24-34-01; REINSTALLED 02 BATTERY IN ACCORDANCE WITH 24-34-01. TEST CHECK OK IN ACCORDANCE WITH A/M/M 24-34-00.