Increased battery life time
Our need of environmental friendly vehicles creates a demand for more efficient batteries both for Hybrid and Electrical cars. When batteries are exposed to cold weather the temperature of the battery drops and the chemical reactions occur more slowly, so the battery cannot produce the same amount of current that it can at room temperature.
When decreasing below -20°C in some situations, the chemical reactions will happen so slowly and give so little power that the battery will appear to be dead when, in fact, if it is warmed up, it will go right back to normal output. The batteries charging rate is affected by temperature and by adding heating to the batteries both life time and efficency will increase.