This is the thing that had been keeping me from upgrading. As a doctor the ability to slap on a battery and recharge on the go is incredibly useful, when I know I don’t need the capacity I take it off and use a slim case. The ease of use and dynamic power management makes the Apple case miles better than the competition (ie some cases make the phone think it is plugged into a charger so it is more profligate with its power usage strategy, with the Apple case it knows)
£129 is a lot but it transforms the usefulness of the phone.
The hump althoughbit looks odd I’d actually really comfortable as your hand feels the edge and so it makes it seem thinner than it is. The hump provides a ledge to help holding it.
The only thing better than this would be truly wireless (eg remote) charging!
Transforms the usefulness of the phone? Common, give me a break. It is a battery with charging coil glued to a silicon case with some small controller to show battery life. This is technology from two decades ago. No great deal of R&D, marketing or manufacturing here. Basically, 130$ of the 139% price tag is pure profit margin.