MTH PREMIER #2192 NEW YORK CENTRAL GP-30 DIESEL ENGINE W PROTOSOUND 2 O GAUGE 3 RAIL. NO NEED FOR A BATTERY. BENCH TESTED WITH DCS AND EVERYTHING WORKS PROPERLY.. DCS SHOWS 6 MINUTES OF TEST TRACK TIME. JUST APPLY TRACK POWER FOR 30-45 SECONDS AND YOU ARE READY TO GO.