In that low-temperature environment, since the density of the storage battery electrolyte is increase, the mobility of free electrons is poor, the chemical reaction force is greatly reduced, the internal resistance of the battery is increased, and the density distribution of the electrolyte is not uniform in a low-temperature environment, and the change of the capacity is unstable, But the service life of the battery will rise. When used at high temperature, the internal resistance of the battery is reduced, the corrosion rate of the electrode plate of the battery is increased, and the life of the battery will be shortened. The ambient temperature has a great influence on the capacity of the battery, and the capacity decreases with the decrease of the ambient temperature. The change of battery capacity when the ambient temperature changes 1 c is called the temperature coefficient of capacity.
(At ambient temperatures of-25 c and 45 ·c, the capacity of 6v7ah batteries is about 4.2ah to 8.1ah; In addition, the actual capacity of the battery is about 80% of the rated capacity at 0 c.)
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