A battery-powered transfer cart battery is a device that converts chemical energy directly into electrical energy, it is a battery designed Perfectrding to rechargeable, rechargeable through a reversible chemical reaction generally refers to a lead-acid battery, rail flat car power source is a battery, it is free from the bondage of cable, it can be operated by remote control, it is more convenient and safe when using, it is suitable for the long-distance rail transportation system.