It's an iPhone 5S with 520 cycles and 95,62% of capacity!
Well, bought from second hand, but assured that was never replaced as battery, so I'm thinking it's the original battery!
95% capacity? Holy cow, my 6s is at 86% and lasts longer. You need to look in the settings because something is working in the background. Also try "battery life" from the app store, it s a simple app that shows the life of the battery.