Apple is preparing to unveil the iPhone 17 in September. Among the new features, the battery and charging system benefit from several discreet but useful upgrades. This improves battery life without necessarily increasing the battery size.
Each new version of the iPhone raises the same expectations: faster, more durable, smarter. Yet, Apple often remains discreet about battery figures. Unlike some competitors who rely on ultra-fast charging and massive capacities, the brand prefers internal adjustments to optimize everyday use. This is exactly what seems to be in the works with the iPhone 17 lineup.
The expected models — iPhone 17, 17 Air, 17 Pro, and Pro Max — are said to retain batteries with similar capacities to those of the iPhone 16 such as the iPhone 16 Pro. But Apple is said to be introducing stacked battery technology, already seen on the iPhone 15 Pro Max. These denser cells allow for better energy efficiency. At the same time, a new electrical adhesive would greatly facilitate the replacement of this component, by loosening the glue using a slight current. A first for the Apple brand, which could improve repairability.
The iPhone 17 could gain in battery life thanks to its A19 chip and more economical components
The real improvement could come from its processor. The iPhone 17 and 17 Air would integrate the A19 chip, while the Pro versions would use a more powerful A19 Pro. Even if the architecture remains unclear (3 nm or 2 nm), Apple promises better energy efficiency. Other components, such as the new M14 OLED screens and the home 5G modems, would also consume less energy. Expected result: increased battery life without the need for a larger battery.
On the charging side, the changes are more modest. No increase in wired power, which should remain around 27 to 30 W. But a major new feature could arrive on the Pro models: reverse wireless charging. Apple is reportedly testing a power of 7.5 W to power AirPods or an Apple Watch via the back of the phone. Everything will go via MagSafe, still limited to 15 W. The entire range will retain the USB-C port with fast charging via USB Power Delivery. No charger will be included in the box, as is now the rule.
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