Iphone 13 battery mah vs 12 pro July 8, 2019 16 32 64 128 Iphone 13 battery mah vs 12 pro max Iphone 13 pro vs 12 pro max battery Iphone 12 pro max vs 13 pro battery life Iphone 12 pro max 13 pro max battery Iphone 12 pro vs 13 pro battery comparison