As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BATTERY PACK ASSEMBLY HAS OTHER THAN ORIGINAL DATA PLATE INSTALLED, OTHER THAN ORIGINAL TOP AND BOTTOM COVERS INSTALLED APPEAR TO BE MAIN NICA CELL SHIMS; ROUND HEAD SCREWS IN CUNTER SUNK HOLES. OTHER THAN ORIGINAL TERMINAL POST, INSTALLED COUNTER SUNK SCREWS, TABS SOLDERED TO TERMINAL POSTS AND NEGATIVE TAP TO POST SOLDER TO TERMINAL POSTS AND NEGATIVE TAP TO POST SOLDER JOINT BROKE UPON OPENING OF COVER.