> Why is that the requirement? The extra layers of plastic to enable removable batteries cost close to zero dollars and don't have to cost more than a millimeter.
That very last phrase you said a millimeter. None of this will fit in one millimeter, which was my counter.
The connector won't affect thickness, it will go at one end of the battery.
For the layers of plastic, the battery already has a wrapping, and the phone already has a back. You just have to reinforce the wrapping on the battery. How much thickness do you think that needs? It's definitely not five millimeters.
That very last phrase you said a millimeter. None of this will fit in one millimeter, which was my counter.