The Samsung Galaxy Ring 2 could arrive soon with a denser "Dream Battery." And for now, that's probably the best we can hope for to make smart rings longer-lasting. But there's a more fundamental fix — patented by Oura,

The upcoming smart ring might feature a solid-state battery, a game-changer for both the industry and the South Korean company

The Galaxy Ring 2 could bring a huge battery life improvement by ditching lithium-ion batteries in favor of solid-state batteries.