The reported 5,567mAh capacity is notably smaller than the 7,300mAh batteries found in competitors like the OnePlus 15, which utilizes silicon-carbon technology. However, Ice Universe claims the iPhone 18 Pro Max’s actual battery life could reasonably be estimated to be on the level of a 7,000mAh Android flagship. This efficiency is attributed to the upcoming A20 Pro chip, a new thermal design, and iOS system scheduling and background management.
While the iPhone 13 Pro Max was widely regarded as a two-day phone for heavy users, subsequent models have struggled to consistently reclaim that specific benchmark of endurance.
How does the iPhone 18 Pro Max compare to silicon-carbon batteries?
Devices such as the Honor Magic 8 Pro, Oppo Find X9 Pro, and OnePlus 15 use this technology to reach capacities exceeding 7,000mAh. In contrast, the reported 5,567mAh battery for the iPhone 18 Pro Max relies on traditional battery chemistry.
Despite a battery size that is roughly 25% smaller than some silicon-carbon counterparts, Apple aims to close the gap through hardware and software integration.
A battery test by YouTube channel Lover of Tech compared the iPhone 17 Pro Max against the Honor Magic 8 Pro (which features a 7,100mAh battery) and the Pixel 10 Pro XL. The test indicated that the iPhone 17 Pro Max lasted only 26 minutes less than the Magic 8 Pro, even though the tester used a UK version of the iPhone, which typically has a smaller battery capacity than the US version.
What factors contribute to the expected battery gains?
According to Ice Universe, three primary pillars drive the expected performance: the A20 Pro processor, an updated thermal design, and iOS background management.
Will the iPhone 18 Pro Max return to “two-day” battery life?
The industry benchmark for "two-day" battery life—where a heavy user can go 48 hours without a charge—was most prominently hit by the iPhone 13 Pro Max.
Do you prioritize raw battery capacity or software efficiency in your smartphone? Share your thoughts in the comments below.