A Tesla battery supplier has claimed its new design boasts a one million-mile lifespan.
Contemporary Amperex Technology, a Chinese car battery-maker, has revealed it is now able to manufacture a battery capable of powering a vehicle for 1.2 million miles over a 16-year period.
Zeng Yuqun, the company's chairman, told Bloomberg: "If someone places an order, we are ready to produce."
However, he explained that the new design would cost 10 percent more than the batteries it already supplies.
Responding to the news, Chris Jones, the chief automotive analyst of research firm Canalys, said the announcement was "significant but difficult to verify".
He told the BBC: "It is likely to be used as a differentiator by some car-makers when there is a significant difference from one vehicle to another - dramatically affecting resale value."
Meanwhile, Tesla could be set to build a factory in the UK.
The electric vehicle and clean energy company previously discussed building a Tesla Gigafactory in the UK last year, but CEO Elon Musk passed it over because of the country's decision to leave the European Union.
At the time, Musk said uncertainty around the decision made it "too risky" and eventually settled on building the factory in Berlin, Germany.
But a report recently suggested a different factory could still be built on UK soil.
According to Property Week, Tesla are looking to find a four million-square-foot site for the factory, where they want to build an "electric vehicle (EV) research, development, and manufacturing plant".