Why does the battery in the battery charge to have a fever

The relationship between car battery calorific value and small amount of electrolyte, such as the seal resistance has increased less the amount of electrolyte batteries, will cause the battery terminal voltage and charging temperature is very high. Battery aging, electrolyte dry, internal short circuit, etc. also can cause fever. The charger can not be late in the charge of constant pressure, causing the battery voltage exceed the allowable value, the temperature will rise, serious will bulge, the end of life. In the process of charging the battery, the electric energy can be changed into chemical energy, and the energy is changed into heat energy and other energy. Charging battery fever is a normal phenomenon, but when the temperature is higher, it should be timely check the charging current is too large or the battery internal short circuit, etc.. Try not to use, horizontally or upside down, to prevent a large amount of gas inside the car battery can be smoothly discharged from the discharge valve, especially when charging is even more so, otherwise it may cause the shell burst.