According to World Health Organization estimates, 278 million people in the world suffer from hearing loss, and in developing countries only 1 in 40 individuals who need hearing aids has access to them. It’s partly a power issue: Batteries cost a lot and need weekly replacement.

The Impact solar-powered hearing aid battery recharger can operate using either sunlight alone or DC input. Bridge designed the device to be small and easily portable, with low part count and complexity. Minimizing cost and material use helps overcome financial and environmental constraints to bring modern hearing aids to users in developing nations.