The company’s CEO, Elon Musk, said in a speech to shareholders last week that Tesla was working on a battery for the next-gen Model 3 sedan.
The company, which is building the batteries for a range of vehicles, including the Model S sedan, said it would make it a priority to improve the batteries’ performance and efficiency.
But while Tesla said it had started manufacturing batteries, it said it was in the early stages of the process.
The company said it wanted to continue to improve its batteries, but it was still “testing and developing new materials and processes.”
In a note to investors this week, Tesla said the battery it was working with in the lab was already “on the ground” and it was not yet ready to make it into the Model 3.
It said it planned to build the battery from the ground up for the Model 2 and Model 3 in 2019, and would build battery cells from the battery pack.