The negative electrode material of lithium titanate battery has the advantages of small size, light weight, high energy density, good sealing performance, no leakage, no memory effect, low self-discharge rate, rapid charge and discharge, long cycle life, wide working environment temperature range, safety It has the characteristics of stable green environmental protection and so on, so it has a very wide application prospect in the field of communication power supply. Lithium titanate battery can be used safely i