As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON INSPECTION UNIT FOUND ALL 2 CELL RETAINERS LOOSE. REMOVED RETAINERS AND FOUND BATTERY CELLS TOO SHORT TO MAKE PROPER CONTACE WITH BATTERY HOLDER TERMINALS. BATTERY CELL PART NUMBERS NOT FOUND. REPLACEMENT OF CELLS WITH PART NUMBER SPECIFIED IN MFG MANUALS.