> The peak demand from the phone can exceed the available voltage even if you're at 30% So throw in a fat capacitor. This was a solved problem 50 years ago, th

> The peak demand from the phone can exceed the available voltage even if you're at 30% So throw in a fat capacitor. This was a solved problem 50 years ago, the only problem is this constant rush to make phones 1% thinner. I've never met anyone that used phone thinness as a metric when choosing a new phone and yet here we are.