As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO PUSHBACK WITH THE APU POWERING BUSSES, ACFT AMPS FLUCTUATED BETWEEN 70 AND 182 MULTIPLE TIMES. NO GALLEY OVENS WERE ON, NO LAVS FLUSHING. PERFORMED BITE TEST OF ELECTRICAL METERS BATTERY AND GALLEY POWER MODULE REF MM 24-21-53-710-001. TESTS OK. NO FAULTS. NO HISTORY.