NGK Insulators has introduced its EnerCera ultra-thin lithium-ion battery, measuring just 0.45 mm and weighing under 1 g. Specifically engineered for wearables—from health monitors to beauty-tech and athletic gear—these batteries eliminate traditional trade-offs between form factor and performance. This breakthrough enables thinner, lighter, and more comfortable designs without sacrificing endurance or safety, potentially transforming future wearable device engineering.