As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS BATTERY: EMERGENCY BATTERY PACK TWO ASSOCIATED LIGHTS ARE NOT ILLUMINATING DURING PREFLIGHT CHECK///SIGN OFF/// REMOVED #2 EMERGENCY BATT PACK, BATTERY CHARGER SYSTEM P/N CBS28-1 S/N 005313 DUE TO INTERNAL FAILURE. INSTALLED REPAIRED BATTERY CHARGER SYSTEM P/N CBS28-1 S/N 008094 AS REQUIRED. PERFORMED AND FOUND OPERATIONAL TEST SATISFACTORY. CLOSED ACCESS. WORK DONE IRW CE-680A AMM 33-50-0