The briefing
Teardowns suggest the iPhone 18 Pro Max’s record-large battery exceeds 20Wh, a threshold that can trigger stricter shipping rules for single-cell packs. Reports indicate Apple is using a multi-cell design to sidestep those restrictions, a configuration that could become standard in future large-battery phones.
Original headline
The iPhone 18 Pro Max has a clever feature to avoid problems with its larger battery that might become the new normal — here’s what you need to know