As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG FLIGHT NR 2357 - AUX BATTERY WILL NOT GO BELOW .10 FOR TAKEOFF, JUMPING BETWEEN .12 - .46. AFTER SHUTDOWN MINGO BATTS OFF AUX STILL SHOWING LOAD OF .26. MAINTENANCE REMOVED MOISTURE FROM AUX BATTERY, SHUNTS. LOADS RETURNED TO NORMAL. GROUND RAN AIRCRAFT. ALL BATTERY LOADS REMAINED STABLE. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.