Elon Musk: Tesla will launch version 2 of its home battery this summer

The excitement around the Tesla electric vehicle, and all the innovation it delivers, is rapidly being matched by the interest in the company's battery solution, the Tesla Powerwall.

Now, in a recent appearance in Paris, Tesla founder Elon Musk upped the battery ante by delivering a bit of news: an updated version of the Powerwall is already being prepared for market.

"We'll be coming out with a version two of the Powerwall probably around July or August of this year, which will see a further step change in capabilities," said Musk during the appearance, which mostly focused on the automobile aspects of Tesla.

Nevertheless, the fact that the battery -- which only began shipping to a small number of buyers in September -- is getting so much attention is an indication that the battery may ultimately may be more successful than the far more expensive line cars. 

Offered in two models, $3750 for 10kWh and $3,000 for 7kWh, the battery is designed to serve as a backup power source for residential structures.

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Crafted to be wall-mounted, the battery is a rechargeable lithium-ion battery that is powered by solar panels or via a utility power grid and has a warranty of 10 years.

However, it appears that the battery is already sold out for the rest of the year, despite the fact that Tesla's site still offers the option of reserving a Powerwall for an "early 2016" ship date on new orders. 

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