As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL EMERGENCY LIGHTS WERE STROBING ERRATICALLY. IN BOTH ON POSITION AND ARMED. REMOVED FWD NR 1 EMERGENCY BATTERY AND INSTALLED A TESTED SUPPLIED BATTERY. REMOVED AFT NR 2 EMERGENCY BATTERY AND INSTALLED REPAIRED SUPPLIED AFT NR 2 BATTERY IAW MM 33-52-01. PERFORMED SATISFACTORY OPS CHECKS, WITH NO DEFECTS.