Android phones may copy iPhone 18 Pro Max steel battery for 10,000 mAh cells

Leaks suggest a major Chinese manufacturer is copying Apple's steel-encased battery design from the iPhone 18 Pro Max, combined with stacked cells. That could enable batteries up to 10,000 mAh, versus the iPhone 18 Pro Max's 5,391 mAh and 21.06 Wh.

• A Chinese vendor is copying Apple's steel battery shell with stacked cells
• The design could enable capacities as high as 10,000 mAh
• iPhone 18 Pro Max: 5,391 mAh, 21.06 Wh, over 19 hours of use
• US lithium transport limit is 20 Wh; Apple stays under it via firmware