Do they keep going and going?

Batteries in cars may last a lot longer than the sort of batteries found in your phone or laptop, but how much longer?

While it is true that electric cars lose battery capacity over time, the continuing advances in technology mean the precise degradation is difficult to define as a whole. The main factor is all down to the owner and how they treat the battery: the way energy is added, the way it is removed and how many charging cycles the battery experiences.