As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS BATTERY: POWER ON CHECKLIST. TURNING ON EMERGENCY LIST TO ON AND ARM WILL NOT COME ON. VERIFIED DISCREPANCY. APPLIED POWER AND LET EMERGENCY BATTERIES CHARGE. AFTER CHARGE LET BATTERIES ON FOR 10 MINUTES AND VERIFIED ALL LIGHTS STAY ON. LET BATTERIES CHARGE AGAIN. PERFORMED OPS-CHECK AND OPS-CHECK GOOD. CONTACTED MCC AND THEY ARE GOOD WITH SIGNOFF. WORK PERFORMED IRW CE-700 AMM 33-50-00.