As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON INSPECTION OF UNIT FOUND ALL THREE BATTERY CELL RETAINERS LOOSE. REMOVED RETAINERS AND FOUND BATTERY CELLS PHYSICALLY TOO SHORT TO MAKE PROPER CONTACT WITH BATTERY HOLDER TERMINALS. BATTERY CELL PART NUMBERS NOT FOUND. REPLACEMENT OF CELLS WITH PART NUMBERS SPECIFIED IN MFG MANUAL.