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iPhone 18 Pro Max Battery Leak Shows 5,400 mAh, Beats Samsung

7/4/2026

Summary

iPhone 18 Battery Leak

A leak on X from user @fireuniverse8 claims the iPhone 18 Pro Max will house 5,235 mAh (Nano SIM) and 5,425 mAh (eSIM) batteries.
Those capacities represent an 8.5 percent rise over the iPhone 17 Pro Max Nano SIM and a 6.6 percent rise over its eSIM version.
The figures also exceed Samsung’s Galaxy S26 Ultra 5,000 mAh battery.
Earlier, Weibo leaker Digital Chat Station suggested roughly 5,000 mAh for Nano SIM and 5,100-5,200 mAh for eSIM, while Apple’s folding iPhone Ultra may hold 5,500-5,800 mAh and cost $2,500.

Summary

Apple Extends Battery

Apple will pair a larger battery with a new 2nm A20 Pro chip and low-power C2 modem, boosting iPhone endurance.
Surveys indicate longer battery life consistently ranks among the top iPhone feature requests.
Analysts expect the upgrades could push real-world use beyond the 12-hour mark of the iPhone 17 Pro Max.
The September 2026 launch may sway buyers who prioritize battery longevity, as Apple favors efficiency over the 7,500-9,000 mAh cells of Chinese Android flagships.

Summary

Apple Boosts iPhone

Apple will equip the iPhone 18 Pro Max with a 48-megapixel Fusion camera that has a variable aperture for manual light control.
Both iPhone 18 Pro and Pro Max will receive 24-megapixel front cameras, up from 18 megapixels on the iPhone 17.
The N2 chip will enable Wi-Fi 7, Bluetooth 6 and Thread, boosting wireless speed and reliability.
Base-model storage will rise about 50 % versus the iPhone 17, boosting internal capacity.

Summary

Apple Declines Comment

Apple has offered no comment on the unverified reports of 5,425 mAh and 5,235 mAh iPhone 18 batteries.
The figures first appeared in a deleted Fire Universe tweet that GSMArena later reposted using unnamed contacts.
Macworld warned readers that the battery rumors rely on questionable sourcing and urged caution.
The leaks emerged alongside a reported Tata Electronics data breach, though no connection has been confirmed.

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iPhone 18 Battery Leak

A leak on X from user @fireuniverse8 claims the iPhone 18 Pro Max will house 5,235 mAh (Nano SIM) and 5,425 mAh (eSIM) batteries.
Those capacities represent an 8.5 percent rise over the iPhone 17 Pro Max Nano SIM and a 6.6 percent rise over its eSIM version.
The figures also exceed Samsung’s Galaxy S26 Ultra 5,000 mAh battery.
Earlier, Weibo leaker Digital Chat Station suggested roughly 5,000 mAh for Nano SIM and 5,100-5,200 mAh for eSIM, while Apple’s folding iPhone Ultra may hold 5,500-5,800 mAh and cost $2,500.

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