A fresh leak from a well-known insider confirms previous rumors: the iPhone 18 Pro Max will get a larger battery. But there’s a downside — the smartphone will be slightly heavier and thicker. Earlier, official data about the batteries of the new lineup had already emerged, and now specific figures for weight and thickness have been added. Let’s break down how the dimensions of the iPhone 18 Pro Max will change.
Users will have to pay for the new iPhone 18 Pro Max battery with convenience
What Battery Will the iPhone 18 Pro Max Get
Initially, rumors about the new iPhone suggested that the battery life improvement in the new flagship would be marginal. But then a bolder claim emerged: the iPhone 18 Pro Max battery would last almost 10% longer than the current model. Now insider Ice Universe has backed up this claim with specific numbers. According to him, the new device will have a 5,500 mAh battery compared to 5,088 mAh in the iPhone 17 Pro Max. The difference in capacity is roughly the same 8-10% that was mentioned earlier.
The iPhone 18 Pro Max battery capacity will grow again
However, mAh is battery capacity, not usage time. Real-world battery life depends on the processor, the display, and system optimizations. Even if capacity increases by 10%, the actual gain in hours could be more or less.
iPhone 18 Pro Max — How Dimensions and Thickness Will Change
The larger battery comes at the cost of size. According to the same insider, the iPhone 18 Pro Max will weigh 240 grams compared to 233 grams for its predecessor. And the body thickness will increase from 8.75 mm to 9 mm.
Unfortunately, the smartphone will become bulkier again
Seven extra grams and a quarter of a millimeter in thickness are practically unnoticeable in the hand. But this isn’t the first rumor that the new flagship will be thicker than the current model. The difference is that now the added bulk is directly linked to making room for a bigger battery.
Should You Trust the iPhone 18 Pro Max Rumors
The actual dimensions of any future iPhone will only be known at Apple’s presentation. And insiders, despite their track records, can easily be wrong. However, the company itself is unlikely to boast about the phone being thicker and heavier, and will almost certainly not mention the capacity in mAh. Apple traditionally talks about battery life only in hours of usage. We’ll clearly find out after sales begin.
Apple is unlikely to boast about the iPhone getting bigger
One thing can be said with confidence: the battery life of new iPhones almost always increases, allowing Apple to claim improved usage time over the previous generation. So the fact that the iPhone 18 Pro Max battery is growing seems plausible — the only question is whether you’ll notice the added weight and thickness.
Should You Wait for the iPhone 18 Pro Max or Buy the iPhone 17 Pro Max
The battery life improvement will be most appreciated by those who actively shoot video, play games, or spend the day away from an outlet. For them, even an extra 8-10% of capacity provides a real reserve by evening. But those who value a light and thin body may not appreciate the extra seven grams.
Something tells us the new device won’t offer anything radically new
Although such a difference is nearly impossible to feel in hand without directly comparing the two models side by side. For many, battery life matters more than a couple of grams.
For now, this is a rumor, not confirmed specs for the new iPhone, and sources contradict each other on the details. A bigger battery is good news, but a 10% capacity increase is hard to call a revolution, and only Apple itself will announce the exact weight and thickness. If you’re an iPhone 17 Pro Max owner, there’s no reason to rush for an upgrade based on this leak. Those planning to buy a new flagship would be wise to wait for the official presentation and real-world battery life tests.
