New York (CNN Business) Tesla is now offering a slightly cheaper version of its lowest priced car, the Model 3.

CEO Elon Musk announced the new version in a tweet early Friday, calling it a "lower cost, mid-range Tesla Model 3." The new version will have a starting price of $45,000. Previously the cheapest version of the Model 3 available started at $49,000

The mid-range battery can take the car 260 miles on a single charge. Battery range is one of the determining factors in the price of an electric vehicle. The long range battery can last 310 miles, but those cars have a $54,000 starting price. (The previous $49,000 version of the Model 3 is no longer available. It combined the cheaper rear-wheel drive option with the pricier long range battery.)

Tesla ( TSLA ) says the standard battery model, which is expected to go about 200 miles on a charge and start at $35,000, won't be available for four to six more months. That model will get the Model 3 close to Kelley Blue Book's estimate of a $35,541 average price of all new cars sold in the United States.

Customers who buy Teslas before December 31 are eligible for a $7,500 tax credit. People who buy the new version might not make the deadline: Tesla says they'll ship in six to ten weeks.

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