This fall Apple will launch four new iPhones, including the ultra-thin iPhone 17 Air. But with the iPhone 17 Pro Max, the company is leaning hard in the opposite direction, and thus fulfilling the wish of many users over the years for the most battery life possible. iPhone 17 Pro Max battery getting bigger than ever In a year where a thinner, lighter flagship iPhone is being introduced, Apple isn’t forgetting the age-old request for a model that does the opposite. Do you want the most possible battery life in your next iPhone? Apple’s about to grant that wish with the iPhone 17 Pro Max. Current Pro Max models already boast impressive battery life. That was true before the iPhone 16 Pro Max, which got larger than before and packed extra battery life too. The changes Apple made to the Pro line last year even made my smaller iPhone 16 Pro’s battery feel just right. But the 16 Pro Max offers, per Apple’s website, up to 33 hours of video playback with its massive battery. This is up from the 29 hours quoted for the iPhone 15 Pro Max. And this year, it’s getting even better. Rumors have indicated the iPhone 17 Pro Max is getting thicker to make space for a larger battery. Is current battery life not good enough? I’d argue it’s plenty, but I’m not the Pro Max’s target customer. Perhaps inspired by the Apple Watch Ultra’s popularity, it seems Apple will give many users exactly what they want: the biggest battery possible. This is partly why I believe we could see this year’s Pro Max rebranded as iPhone 17 Ultra. Whether that happens or not, though, Apple plans to offer flagship models for two very different customer preferences. Want thin and light? iPhone 17 Air is the answer. Prefer a beast of a phone with over-the-top battery life? This year’s iPhone 17 Pro Max will make that happen more than ever before. Do you want more battery life on your iPhone? Or would you prefer a thinner model? Let us know in the comments. Best iPhone accessories Add 9to5Mac to your Google News feed.  FTC: We use income earning auto affiliate links. More.You’re reading 9to5Mac — experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Don’t know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel