The complete battery system includes a battery pack, battery charger and a 200 watt power inverter. Running time for the full Spark PA system is 4 hours. This includes running your connected effects pedals and other outboard gear. The battery is airline safe Nickel Metal Hydride (NiMH) at 12v 10ah. These components can be purchased now at BatterySpace.com. The model number for the battery with the cigarette socket is BL-HD10R2T. The charger with the cigarette socket is CH-UN180CP. The 200 watt inverter is WA-2402-5.