Of all the environmental factors, the temperature on the maximum performance of the battery charge and discharge, the electrode / electrolyte interface electrochemical reaction with the ambient temperature, the electrode / electrolyte interface is regarded as the heart of the battery. If the temperature drops, the electrode reaction rate also decreases, assuming the battery voltage is kept constant, the discharge current decreases, the output power of the battery will decrease. If the temperature rise on the contrary, the battery output power will increase, the temperature also affects the temperature rise of the transmission rate of the electrolyte is accelerated, the temperature drop transfer, slows down transmission, the battery charge and discharge performance will be affected. But the temperature is too high, more than 45, will destroy the chemical balance within the cell, leading to side reactions.