The world’s leading electric car manufacturer has introduced a lithium-metal-air battery that it says will be the “world’s most energy-efficient.”

The lithium-air batteries will provide more energy per kilowatt-hour than the existing lithium-polymer battery, but are lighter and cost more.

Tesla said the batteries could go on sale by the end of 2018.

Tesla has been working on a new lithium-based battery technology for a while.

It is the brainchild of two former Tesla engineers, Michael Jordan and Paul Gulotta, who founded the company in 2014.

Tesla has been testing the technology since 2018.

The company said it developed a battery that has the same electrical properties as conventional lithium-cell batteries, but has twice the energy density.

The new batteries are much smaller, less expensive and more durable than the previous generation.

The new lithium battery, which is being tested at the company’s Fremont, California, factory, has a density of 3.5 kilowatts per square centimeter and uses a supercapacitor.

The battery is also very fast, able to achieve the lowest charging times for a lithium battery and the highest voltage for a rechargeable battery.

The batteries are also far more efficient, Tesla said, and will be “unleash a new era in electric vehicles.”

The company says the new lithium batteries will last “for decades” in normal driving conditions.

Tesla also says the batteries will be 100% recyclable and environmentally friendly.

The world’s top auto manufacturers have invested billions in electric cars, but it has been hard to deliver them on time.

Tesla is aiming to make its batteries cheaper, faster and more reliable than traditional batteries.

The company is also trying to get people to pay less for electricity and use less fossil fuels.

The U.S. Department of Energy says it will release the new battery in 2020.

The first battery is expected to be used in the Tesla Model 3, which Tesla is planning to start production in 2021.