What was found
RTG DUE TO EFAD BATTERY ISSUE ON TAXI OUT. FLIGHT ATTENDANTS REPORTED FIRE WAS CONTAINED WITH WATER, FIRE CONTAINMENT BAG AND HALON EXTINGUISHER. DECLARED EMERGENCY AND INSTRUCTED FIRE DEPARTMENT TO MEET US AT GATE. RECEIVED SMOKE AFT LAV WARNING MESSAGE DUE TO FUMES ENTERING LAV. FIRE DEPARTMENT ASSESSED AIRCRAFT AND STATED IT WAS SAFE. DEPLANED USING JET BRIDGE TO GET PASSENGERS OUT OF RESIDUAL ODOR OF CHEMICALS AND SMOKE. (FLT#5598) CLOSED INSPECTED AND PERFORMED GENERAL VISUAL INSPECTION OF FIRE AREA CAUSED BY THE FLIGHT ATTENDANTS EFAD BATTERY ISSUE, WITH NO DAMAGE FOUND, JUST SOILED AND SLIGHTLY DAMAGED CENTER CARPET AT ROW 23 WITH NO DAMAGE TO FLOOR BOARD. AIRCRAFT OKAY FOR CONTINUED SERVICE.