As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT N605RP DEPARTED FROM SWITZERLAND TO THE US, DURING THE FLIGHT THE BATTERY HEAT CB POPPED AND WAS NOT ABLE TO BE RESET. ONCE BACK AT BASE T/S WAS CARRIED OUT. FAULT WAS FOUND TO BE A WIRE TRAPPED/CRUSHED UNDER A BATTERY TIE BAR AND THE LINER SPACER KIT INSTALLED ON INCORRECT CONFIGURATION BLOCKING THE VENT VALVE.