Current EV's that utiize Li
Current EV's that utiize Li-Ion all have complex coolant systems that maintain the Li-Ion pack at a certain temperature range. This is one of the main reason's Toyota did not adapt this battery chemistry. The added complexity goes against the philosphy of rhe Prius drive system. Checkout the Chevy Volt forum for the issues they are having now with their Voltec system as an idea.