Lei Fei recommended the use of a square steel shell electric car. Lei Fei can provide standard capacity (20/40/60/80 ah) electric vehicle batteries, can also be customized design according to the special needs of the mass of customers. Electric vehicle battery is generally divided into high power density and high energy density of the type, which corresponds to the different requirements of the oil electric hybrid electric vehicles, plug-in hybrid electric vehicles and pure electric vehicles. This kind of battery is specially designed for high reliability, long life and durability of automotive applications. The battery products may be used in different levels of the system, from a single core, to a battery module consisting of a plurality of batteries, and then to a complete battery box consisting of all sensor and switch, software, communication interface and battery management system. Regardless of customer purchase is a single core or complete battery box system or subsystem, Lei Fei will provide customers in the whole process of system integration and technical support.