Range
Unlike Internal Combustion Engine (ICE) vehicles, with battery electric cars you can't just quickly pull into a petrol station, brim the tank and leave within a few minutes. Electric cars take a little time to recharge. Range, the distance you can travel on a single charge of the battery, becomes extremely important. It's equivalent to the size of a fuel tank on ICE cars, the bigger the tank, the further you can travel.
You might be surprised by just how far Tesla electric vehicles can travel right now. The Tesla Model S Long Range can, according to the company, drive 663 kilometres on one charge (using the NEDC testing standard).