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Famous leaker @MajinBuOfficial has revealed that the iPhone 15 Pro Max model will get a very small increase in its battery capacity compared to its predecessor, the iPhone 14 Pro Max. According to the account, the unit is only expected to have a 4422mAh battery.
The new iPhone 15 Pro Max should have a 4422mAh battery. Despite this small increase compared to the previous series, it should still be more efficient pic.twitter.com/FBzQzo5be3
— Majin Bu (@MajinBuOfficial) August 31, 2023
This will be a disappointing increase if true, especially after earlier reports saying Apple had significant battery boost plans for its new line. To recall, it was reported that the entire iPhone 15 series will have decent improvements: iPhone 15: 3877mAh (18% increase), iPhone 15 Plus: 4912mAh (13.6% increase), iPhone 15 Pro: 3650mAh (14.1% increase), and iPhone 15 Pro Max: 4852mAh (10.9% increase).
The rumor was affirmed by another one in July, claiming Apple would use the stacked battery technology for the iPhone 15 models. This refers to a different method of producing the batteries. Normal types rely on winding technology, wherein the strips of positive electrodes and negative electrodes are rolled inside the battery. This leaves some unused spaces in batteries. Stacked battery tech will resolve this by “stacking” the strips in layers to ensure all the areas are used. This will result in higher battery capacity, which means longer battery life for iPhones.
Unfortunately, despite all the promising claims mentioned above, @MajinBuOfficial’s new report indicates an inadequate boost for the lineup’s battery. If true, the 4422mAh battery the iPhone 15 Pro Max will have is not significantly different from the 4323mAh battery of the iPhone 14 Pro Max now.
On a positive note, the leaker pointed out a silver lining, saying the iPhone 15 Pro Max’s battery “should still be more efficient” versus what the current model has. The leaker didn’t mention any specific reason for the claim, but it is probably the A17 Bionic chip based on TSMC’s 3nm process, which the model is expected to have.