As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT SYSTEM BATTERY PACK FAILED CAPACITY CHECK FOR AFT GALLEY AND AFT CABIN LH BIN LIGHTS. GROUNDED - YES. REMOVED AND REPLACED 4 EA POWER SUPPLY/ BATTERY PACKS M1672, M1673, M1676, AND M1694 IAW B737-800 AMM 33-51-06-960-806 EMERGENCY LIGHTS IN AFT GALLEY AND AFT CABIN TEST GOOD.