The Navy is developing technology for underwater recharging of unmanned undersea vehicles.

Even more interesting is that the technology will be wireless, according to Space and Naval Warfare Center Pacific.

The technology would be “similar to wireless charging pads currently available for smartphones and other devices,” said an SSC Pacific news release, which pointed to previous research.

“Wayne Liu, an SSC Pacific project manager developing wirelessly charged undersea and aerial platforms, initially demonstrated the submerged charging capability using his own phone several years ago as a proof-of-concept experiment,” the Navy said.

“Several feet below the surface, his phone rested in a plastic bag on a charging pad. The demo was a success, as Liu left with a few more battery bars. Development of these systems has improved significantly since that time, and the researchers are now advocating for the creation of a guiding set of standards for these underwater wireless power transfer devices.”