British researchers have developed a revolutionary ultra-thin battery capable of powering smart contact lenses, marking a major leap forward in wearable tech innovation. The breakthrough design uses biocompatible materials and can store enough energy to support micro-LEDs, sensors, and other embedded electronics.
The battery, created by a team at the University of Surrey, could lead to real-world applications ranging from real-time health monitoring to augmented reality experiences—delivered directly through the human eye. It charges wirelessly and maintains a high energy density despite its micro-scale size, solving one of the key challenges of powering smart lenses.
The advancement is expected to accelerate development in the $13 billion smart eyewear market and could become a cornerstone for next-generation medical diagnostics and digital interfaces. 
