Ask most people what they want in a new smartphone, and there are usually three key factors: a large screen, a great camera, and excellent battery life. Over the past decade, phones have gotten better, and the best phone cameras are better than most dedicated cameras, but battery technology has arguably not progressed as fast.
Yet, some companies are always trying to push the boundaries of what’s possible with smartphone batteries. New technologies such as silicon-carbon have yielded higher-density batteries — with some trade-offs in longevity — meaning phone makers can fit more capacity in the same space without increasing the phone's thickness.
