As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT N209PS WAS A SPARE AIRCRAFT IN DAY. THE NR 1 EMERGENCY BATTERY POWER SUPPLY WAS FOUND TO BE BAD. MAINTENANCE INSPECTED AND REPLACED THE NR 1 EMERGENCY BATTERY POWER SUPPLY IN ACCORDANCE WITH BOMBARDIER MAINTENANCE MANUAL 24-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.