Smartphone dilemma: bigger battery or faster charging?

Smartphones can charge faster and faster, but that comes at a price. With a phone that charges quickly, the capacity of the battery is smaller than what is possible in that housing. How big is that difference and why is that?

Before buying a phone, it seems like a luxury feature, but once you get used to it, it’s a pain to go back. Being able to recharge your phone quickly is very nice. With fifteen minutes of charging you can easily continue for half a day, something that was hardly imaginable five or ten years ago.