Lithium titanate battery is a kind of negative electrode material for lithium ion battery – lithium titanate, which can form 2.4V or 1.9V lithium ion secondary battery with positive electrode materials such as lithium manganate, ternary material or lithium iron phosphate. In addition, it can also be used as a positive. The test data shows that under the conditions of 6C charging, 6C discharging, and 100% DOD, the cycle life of the lithium titanate cell ( LTO battery cell) exceeds 25 000 times,. Lithium iron phosphate battery packrefers to a lithium ion battery that uses lithium iron phosphate as a positive electrode material. Its characteristics are that it does not contain precious elements such as cobalt, the price of raw materials is low, and the resources of phosphorus.