Apple to Significantly Boost iPhone 18 Pro Battery Capacity with New A20 Chip

Apple is reportedly set to make a major upgrade to the battery life of its iPhone 18 Pro series, according to regulatory filings in China and leaks from Digital Chat Station. The iPhone 18 Pro Max model in the U.S. is expected to feature a battery capacity of up to 5,567 mAh, nearly 500 mAh more than the current generation and surpassing the 5,000 mAh threshold for the first time. This increase is likely enabled by Apple’s full transition to eSIM in the U.S., eliminating the physical SIM tray and freeing up internal space for a larger battery.

In addition to the bigger battery, the new models will reportedly include the A20 Pro chip, manufactured by TSMC using an advanced 2-nanometer process. This chip is expected to deliver higher energy efficiency and reduce power consumption compared to previous generations. The combination of a larger battery, a more efficient processor, and iOS energy management could result in significantly longer battery life for the Pro Max models, potentially outperforming Android devices with even larger batteries.

However, Apple is not adopting silicon-carbon battery technology used by some Chinese manufacturers to increase energy density in smaller volumes. Instead, the battery capacity increase relies on more precise internal design optimization. If these reports prove accurate, the iPhone 18 Pro series will represent one of Apple’s most substantial battery upgrades in recent years. The official announcement is anticipated in September, alongside rumors of Apple’s first foldable phone model.