Ammon News - Five months before its expected launch, a fresh rumour from a self-proclaimed Apple insider claims advance information on the iPhone 18 Pro series citing significant upgrades, including battery power.

Leaker account @ApplesClubs has the tech world buzzing, with the claim that iPhone Pro will come with “even better battery life than the iPhone 17 Pro.”

This upgrade, the leak claims, is in addition to bigger capacity gains, efficiency boosts, and improved real-world endurance.

The post includes a sleek gold Pro render and teases that last year’s standout feature in the iPhone 17 Pro series could get a serious upgrade.

While it’s early days for 2026 devices, the rumour lines up perfectly with multiple supply-chain reports from the past two months.

What we know so far about iPhone Pro Max (based on leaks and rumours):

Battery: The iPhone 18 Pro Max is expected to pack a massive 5,100–5,200 mAh cell in eSIM-only models (around 5,000 mAh for versions with a physical SIM tray). That’s up from the iPhone 17 Pro Max’s ~5,088 mAh, making it Apple’s largest battery ever. The standard 6.3-inch iPhone 18 Pro could see similar proportional gains.

Chip | efficiency: The new A20 Pro chip, built on TSMC’s advanced 2nm process, is rumored to deliver 15–30% better power efficiency than the A19 Pro. Combined with Apple’s first in-house C2 5G modem, this should translate to dramatically longer runtime — potentially 1.5–2 days of heavy use for many owners.

Design tweaks | display: Minimal overall changes are expected. The devices will keep the same 6.3-inch and 6.9-inch displays, but rumors point to a smaller Dynamic Island (possibly thanks to under-display Face ID) and a slight increase in thickness to fit the bigger battery. No radical redesign is anticipated.

Cameras | other specs: Triple 48MP rear cameras (with a variable-aperture main lens for better photo control), up to 12GB RAM, and continued Apple Intelligence enhancements.

Side-by-side comparison
Here's a comparison of the rumoured iPhone 18 Pro Max battery against its main 2026 flagship competitors (Samsung Galaxy S26 Ultra and Google Pixel 11 Pro / Pro XL), based on the latest leaks and supply-chain reports as of early April 2026.