As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT EMERGENCY LIGHTS WILL NOT TEST. BATTERY 1 LOW ALERT, APPEARS WHEN TEST BUTTON IS HELD. R & R FWD EMERGENCY LIGHTING BATTERY POWER SUPPLY IAW AMM 33-51-01-4. DURING FURTHER TROUBLESHOOTING FOUND LOOSE AND PUSHED BACK SOCKET "A2" AT RELAY R2-5700 RECEPTACLE R5-5700. FOUND BAD PIN IN CONNECTOR. REPAIRED.