iPhone 12 Pro Max Has Smaller 3,687 mAh Battery According to Regulatory Filing - MacRumors
iPhone 12 Pro Delivers Worse Battery Life Than Last Year's iPhone 11 Pro - Take a Look at These Stats
iPhone 12 Pro battery life test complete: bad news for gamers! - PhoneArena
Buy Battery Case for iPhone 12 Pro Max, 6000mAh Slim Portable Protective Extended Charger Cover with Wireless Charging Compatible with iPhone 12 Pro Max (6.7 inch) - BX12Pro Max (Matte Black) Online in Vietnam. B08L7353WY
iPhone 12 Pro Max confirmed to pack 3,687 mAh battery - GSMArena.com news