A brand new leak claims to have particulars of the battery capability for the forthcoming iPhone 18 Professional, and whereas it continues the sample of enhancing yearly, this time Apple has managed solely a minor enhance.
Again in February 2026, a leak claimed to indicate that the iPhone 18 Professional Max would have longer battery life than its predecessor, however solely by a small quantity. Now based on a leaker with solely a combined monitor document, the identical is true for the iPhone 18 Professional.
Particularly, leaker Fastened Focus Digital reports that for the US, the iPhone 18 Professional can have a 4,288 mAh battery. For China, which nonetheless requires area for a bodily SIM card, the capability can be 4,056 mAh.
This compares to the iPhone 17 Professional which in its US model had a 4,252 mAh battery. That was truly virtually 19% larger than the earlier iPhone 16 Professional.
By comparability, if the reported figures are appropriate, the US iPhone 17 Professional’s battery can be simply 0.85% greater than its predecessor. China’s SIM-card mannequin does higher, with a 1.71% enchancment on the earlier mannequin’s 3,988 mAh.
Apple by no means quotes exact mAh figures for its batteries, preferring as an alternative to provide instance hours of utilization. So Apple described that 19% leap from the iPhone 16 Professional to the iPhone 17 Professional as which means six extra hours of on-device video playback, or eight extra hours of streaming video.
Regardless of the fractional battery capability enchancment reported for the iPhone 18 Professional, although, it is not doable to say that the telephone will persist with the identical hours of utilization. That is as a result of the iPhone 18 Professional can have an A20 processor, which is reported to be considerably extra energy environment friendly.
The A20 is to be Apple’s first 2-nanometer processor. In comparison with the earlier 3nm processors, it has been reported that the A20 would enhance battery life and can also present between 10% and 15% efficiency enchancment.
Nonetheless, the 2nm A20 processor is believed to price Apple round twice what the A19 did. This newest leak speculates that this can be yet one more issue that forces Apple to lift its costs.