Apple never lists iPhone battery capacities on its spec sheets, but new EU energy labels in the online store have spilled the details for the entire iPhone 17 lineup. The headline: bigger batteries for the Pro models, a modest bump for the standard model, and a super-slim iPhone Air that trades capacity for an ultra-thin design—backed by an optional magnetic power bank.
The iPhone 17 Pro Max is Apple’s first phone to crack the 5,000 mAh mark, landing just under the 20 Wh threshold that would classify the battery as hazardous goods for transport in countries like Germany, Austria, and the United States. Staying below that limit helps avoid higher shipping and logistics costs.
Meanwhile, the iPhone Air gets a dramatically thinner chassis but a much smaller battery. To offset that, Apple offers a $99 power bank that snaps magnetically onto the back and can extend runtime by up to 65%.
Exact battery capacities and changes versus the previous generation:
– iPhone 17: 3,692 mAh (+3.7% vs. iPhone 16)
– iPhone Air: 3,149 mAh (-32.6% vs. iPhone 16 Plus); 5.64 mm thick, which is 2.16 mm thinner (27.6%)
– iPhone 17 Pro: 4,252 mAh (+18.7% vs. iPhone 16 Pro)
– iPhone 17 Pro Max: 5,088 mAh (+8.6% vs. iPhone 16 Pro Max)
What this means for buyers:
– iPhone 17 Pro and Pro Max should deliver noticeably longer battery life thanks to sizeable capacity gains, with the Pro Max breaking the 5,000 mAh barrier.
– iPhone 17 gets a modest improvement that could still translate into better day-to-day endurance, depending on hardware and software efficiency.
– iPhone Air prioritizes a remarkably thin profile; the optional magnetic power bank is the go-to add-on for heavy users who want all-day stamina without sacrificing the phone’s slim feel.
If battery life is your top priority, the Pro Max looks like the endurance champ. If you want the thinnest iPhone yet, the Air delivers on design—with a smart accessory to keep you powered when you need it.
