iPhone 18 Pro Max's Larger Battery Capacity Allegedly Revealed

The upcoming iPhone 18 Pro Max will be equipped with a nearly 12% larger battery compared to the iPhone 17 Pro Max, according to an apparent leak. An alleged photo of a battery pack for a Chinese model of the iPhone 18 Pro Max with a SIM card tray lists a capacity of 5,391 mAh, up from 4,823 mAh for the equivalent iPhone 17 Pro Max battery. The photo was shared on the Korean platform Naver today, but it supposedly originated from the Chinese social media platform Weibo. The identical 5,391 mAh capacity appeared in a regulatory database last month, so the capacity is looking increasingly likely to be accurate. For the U.S. model of the iPhone 18 Pro Max, in which the lack of a SIM card tray provides more space for a slightly larger battery, the Naver post claims it will have a 5,567 mAh capacity. The equivalent iPhone 17 Pro Max has a 5,088 mAh battery, so this would work out to be a nearly 10% increase on a year-over-year basis. Based on this leak, it appears that meaningful battery life gains will not extend to the smaller iPhone 18 Pro. In the U.S., the device will apparently have a 4,288 mAh battery, which would be less than a 1% increase over the iPhone 17 Pro's 4,252 mAh battery in that country. It was previously rumored that the iPhone 18 Pro Max will be thicker than the iPhone 18 Pro, so that might help to explain the difference. All of the alleged iPhone 18 Pro battery capacities are listed in the table below. iPhone 18 Pro China China Difference U.S. U.S. Difference iPhone 16 Pro 3,582mAh +308mAh 3,582mAh +308mAh iPhone 17 Pro 3,988mAh +406mAh 4,252mAh +670mAh iPhone 18 Pro 4,056mAh +68mAh 4,288mAh +36mAh iPhone 18 Pro Max China China Difference U.S. U.S. Difference iPhone 16 Pro Max 4,685mAh +244mAh 4,685mAh +244mAh iPhone 17 Pro Max 4,823mAh +138mAh 5,088mAh +403mAh iPhone 18 Pro Max 5,391mAh +568mAh 5,567mAh +479mAh The capacities differ by region because Apple has continued to include a SIM tray on iPhones sold in some countries outside of the U.S., while U.S. models have been eSIM only since the iPhone 14 lineup. Without a physical tray taking up internal space, Apple can fit a slightly larger battery into the eSIM-only version of each device. Starting with the iPhone 17 Pro and the iPhone 17 Pro Max, the SIM card tray is also removed on models sold in Canada, Japan, Mexico, Saudi Arabia, the United Arab Emirates, and a few other countries and territories. Popular StoriesUpcoming OLED iPad Mini Allegedly Uses 60Hz 8.4-Inch Display PanelTuesday July 14, 2026 5:36 am PDT by Tim HardwickApple is allegedly using a 60Hz 8.4-inch display panel in the upcoming OLED iPad mini, which is expected to be released later this year. The information comes courtesy of a hit-and-miss tipster running the account "yeux1122" on the Korean Naver blog. The leaker claims to have been told by a source in Apple's supply chain that the unreleased iPad mini is equipped with a low-temperature...iPhone 18 Pro Display Sizes: What to ExpectThursday July 30, 2026 4:30 am PDT by Tim HardwickApple won't change the display size of this year's iPhone 18 Pro models, but a different change to the display has been rumored several times now. Apple is expected to stick with 6.3-inch and 6.9-inch displays for the iPhone 18 Pro and iPhone 18 Pro Max, respectively. For context, those are the display sizes of the current iPhone 17 Pro and iPhone 17 Pro Max. Meanwhile, rumors continue to ...iPhone 18 Pro: Three Ways Apple's Chip Redesign Boosts PerformanceTuesday July 14, 2026 12:16 am PDT by Tim HardwickAn unconfirmed image of the iPhone 18 Pro's motherboard was recently shared online that appears to suggest that the A20 Pro chip is built on a new packaging technology. It might not sound exciting, but it could deliver an instant jump in real-world performance over the A19 Pro currently used in the iPhone 17 Pro models. The image shows an apparent A20 Pro chip integrated using TSMC's...