iPhone Duo’s unusual battery design hides a big capacity

Apple's first foldable, the iPhone Duo, splits its battery into two cells, with one in each side of the device, to make room around the hinge. The design gives it more capacity than the iPhone 18 Pro but less than the Pro Max, and Apple says a compatible 60W charger can reach 50 percent in about 20 minutes. The larger folding screen will still draw more power than the outside display.

Summary written with AI by HowTechMoves, based on reporting by Cult of Mac.