The U.S. Patent and Trademark Office has published an Apple patent application that reveals Cupertino’s work on next-gen flexible batteries.

“With revelations coming to light earlier this year that Apple may be working on future device form factors such as a flex-screen based iPhone and/or an information band or wristwatch, it’s clear that Apple’s battery team had to come up with solutions that would support such form factors,” Jack Purcher reports for Patently Apple.

“Apple’s battery team had already revealed next generation batteries that could take on all kinds of shapes, but to support curved form factors in particular, Apple’s team had to specifically invent new designs that could be flexible yet durable and safe,” Purcher reports.

Read more in the full article here.