[Elon Musk] recently staged one of his characteristic high-profile product launches, at which he unveiled a new Tesla electric semi-truck. It was long on promise and short on battery pack weight ...

There are three main obstacles to making electric cars a viable alternative to those powered by internal combustion engines: the weight ... battery? That's one of the possible alternatives that ...

The world's largest lithium ion battery ... stable. Tesla said the expertise it built up building lithium-ion batteries for its cars helped it develop the bigger power packs for the energy storage ...