Safety, range and costs: these are the three big premises of electromobility. Safety definitely comes first. Lithium-based traction batteries are usually completely enclosed in the battery case and integrated in the vehicle to protect the battery from all conceivable stresses and external influences. This “armour” has an effect on construction, weight, size and overall design of the vehicle.
from Geochemistry News -- ScienceDaily http://ift.tt/2qh2tvt