As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BATTERY PACKS NR 1 AND NR 2 FOR EMERGENCY LIGHTS WERE FOUND TO BE DEAD. R & R BATTERY PACKS NR 1 AND NR 2 IAW AMM 33-51-17. PERFORMED THE OPS TEST OF THE EMERGENCY POWER SUPPLY UNIT IAW AMM 33-51-17-710-801, STEPS 4A(4) AND (5). NO DEFECTS NOTED.