Lg Chem, the South Korean chemical company, will be supplying the battery upgrade for the Tesla Roadster. This is a significant move for the company, as it seeks to establish itself as a key player in the electric vehicle market.

The battery upgrade will allow the Tesla Roadster to travel further on a single charge, and is expected to significantly improve the car's performance. Lg Chem is already a supplier of batteries for Tesla's Model S and Model X vehicles, and the new contract will see it become the exclusive supplier of batteries for the Roadster.

The company is investing heavily in the electric vehicle market, and is aiming to become the world's largest supplier of batteries for electric vehicles. It has a goal of supplying batteries for one million electric vehicles by 2025.

The move by Lg Chem is a boost for Tesla, which has been facing challenges in recent months, including production delays and quality issues with its Model 3 vehicle. The Roadster is seen as a key part of Tesla's plans to revive its fortunes, and the battery upgrade will be a major boost for the car.