As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG - FLIGHT 2393 - DURING TAXI, THE LOAD ON THE STANDBY BATTERY REMAINS STEADY AT .03 TO .45. RETURNED TO THE GATE. MAINTENANCE CLEANED THE BATTERY INDICATION CONNECTOR AND REMOVED MOISTURE FROM THE STANDBY BATTERY SHUNT AREA. BATTERY INDICATION RETURNED TO NORMAL AND BATTERY SYSTEM TESTS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.