The best automotive battery tech still has an energy density only 1/60th that of petrol when measure by weight. Even worse, when the batteries are flat and useless they still weigh exactly the same. There's a long, long way to go before the technology matures to an almost forgettable everyday level.
Even worse is the lifespan. Early Leaf's, which aren't fitted with battery conditioning technology, are being sold in dreadful working condition. 2013 models with only 50 ot 60k miles under their belt are being sold second hand with a battery capacity permitting only 50 or 60 miles range left. Top Gear recently used such a car in one of their challenges. That makes an utter mockery of the supposed environmental benefits of the electric car.