There is little to know about Apple’s secretive Project Titan, the company’s alleged electric car project, but a report by South Korean technology news source ETNews may give a peek inside.

According to the report, Apple may be working with an as yet unidentified Korean battery company to develop a new hollow core lithium-ion battery for its future battery-electric car.

The new batteries feature a hollow core the thickness of two fingers, and are expected to result in higher electrical output for Apple’s self-driving electric cars.

As ETNews reported, hollow batteries could be a major step forward in electric vehicle technology because today’s dense batteries “create most heat from the center due to chemical reactions.”

But with a hollow battery, “air flow and cooling are smooth in the center [which] can minimize installation of separate cooling device[s] or a device that prevents overheating.”

The report said that the unidentified battery company has roughly 20 employees, a clue that could possibly lead to its identity.

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Website MacRumors says it’s possible the batteries will be made by Korean Company Orange Power, which has a European Patent Office patent application for a hollow-type rechargeable battery.

Also, the company has 25 employees in research and development and eight in other roles, which seems to fit the bill of Apple’s anonymous partner.

Of course it is still too early to know if Orange Power is, in fact, Apple’s partner since Business Insider is reporting that the mystery battery company and Apple have signed a non-disclosure agreement.

One of the officials from the South Korea-based company stated: “Because we made a NDA with Apple, we cannot discuss any information regarding this project.”

But whether it’s Orange Power or another company, a new type of automotive battery would give Apple’s car a strong competitive advantage above and beyond the company’s name recognition.

Business Insider