Engineers at Penn State have created a battery that can self heat, allowing rapid charging even in very cold weather. While conventional lithium-ion batteries should not be rapidly charged at temperatures below 50 degrees Fahrenheit, these are capable of 15-minute rapid charging at all temperatures, even as low as minus 45 degrees F, without severe degradation.



They found that their self-heating battery could withstand 4,500 cycles of 15-minute charging at 32 degrees F with only a 20-percent capacity loss. This provides approximately 280,000 miles of driving and a lifetime of 12.5 years, longer than most warranties. A conventional battery tested under the same conditions lost 20-percent capacity in 50 charging cycles.

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Source: [H]ardOCP – Self-Heating, Fast-Charging Battery Makes Electric Vehicles Climate-Immune