EV Batteries in Winter: some tips

Here are four tips from the Office of Energy Efficiency & Renewable Energy to improve Electric Vehicle Battery range this winter! (source: https://energy.gov/eere/articles/4-tips-improve-electric-vehicle-battery-range-winter) Electric vehicle (EV) batteries charge by moving ions through a liquid electrolyte (more: https://energy.gov/eere/articles/how-does-lithium-ion-battery-work). As the temperatures outside drop, the electrolyte in lithium ion EV batteries thickens and it becomes more difficult for ions to move through (much like the challenge of walking through snow versus dry pavement). This increased resistance results in less EV battery range as more energy is needed