Hinges are simple mechanisms that allow movement between two objects. ... Hinges let one object, such as a door or the lid of a box, swing open and closed while they are fastened to another object.

A closer look at the Moto Razr 2022 hinge mechanism • The two battery cells As is typical with foldables, the battery is split into two cells – a small 712mAh/2.8Wh one in the top half and a ...