As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2917 - THE CREW REPORTED THE EMERGENCY LIGHTS WERE FOUND ON. THE BATTERY WAS DISCHARGING. THE EMERGENCY LIGHT SWITCH IN THE COCKPIT WAS FOUND "OFF". THE AIRCRAFT WAS REMOVED FROM SERVICE. CHARGED EMERGENCY LIGHT BATTERY USING APU FOR 6 HRS IAW RADIANT CMM 25-60-03. MAINTENANCE PERFORMED EMERGENCY LIGHT CHECK OK AND PER EMB 145 AMM 33-50-00. THE AIRCRAFT WAS RETURNED TO SERVICE.