In a long, looping battery drain run conducted by the creator behind the TechDroider channel, the Xiaomi 17 Pro Max outlasted Apple's iPhone 17 Pro Max by only five minutes, with 13 hours 36 minutes to 13 hours 31 minutes. The narrowness of that margin matters more than its winner, because the Xiaomi carries a battery roughly 55 percent larger. In a long human story about how much work we can extract from limited stored energy, the result suggests that efficiency can close a gap that raw capacity seemed to guarantee.
Xiaomi 17 Pro Max Outlasts iPhone 17 Pro Max by 5 Minutes, But Needs a 55% Bigger Battery to Do It
A 55 percent bigger battery bought only five extra minutes.
Mark
So the Xiaomi won, but nobody's calling it a win?
Mimi
Because of the margin. Five minutes over more than thirteen hours, and Xiaomi needed a 7,500mAh battery against the iPhone's 4,823mAh.
Luke
Worth noting that's one run by one YouTuber. The 55 percent figure is the capacity gap, not a measured efficiency number. Efficiency is an inference from it.
Mark
And the iPhone was the smaller-battery version?
Mimi
Yes, the non-eSIM model. The eSIM one has 5,088mAh, so this unit started a bit behind.
Mark
What about the heat?
Mimi
The Xiaomi hit 47.6 degrees Celsius, the iPhone 43.1. The source credits the iPhone's vapor chamber.
Luke
But the Xiaomi also overheated past its threshold mid-test and had to be paused. We don't know how that pause affected its runtime.
Mark
Could the software explain the drain?
Mimi
The article floats Xiaomi's custom interface as a cause.
Luke
That's a guess. Nothing in the test isolates it.
Mark
And the rankings changed from the earlier test?
Mimi
Pixel 10 Pro XL beat the Galaxy S25 Ultra this time, the reverse of before. Results move between runs.
Il Polso
- A five-minute gap decided a 13-hour battery run, leaving the iPhone 17 Pro Max almost tied with a rival carrying a far bigger cell.
- The Xiaomi 17 Pro Max ran hottest of the field at 47.6 degrees Celsius and hit its thermal limit, forcing the tester to pause mid-run.
- Wccftech reads the near-tie as proof of Apple's performance-per-watt edge, though the claim rests on one test.
- The ranking reshuffled from an earlier run, with the Pixel 10 Pro XL now beating the Galaxy S25 Ultra, so the result is not settled.
- Watch for silicon-carbon batteries from Apple and for other testers to reproduce the near-tie before drawing firm conclusions.
In a long, looping battery drain run conducted by the creator behind the TechDroider channel, the Xiaomi 17 Pro Max outlasted Apple's iPhone 17 Pro Max by only five minutes, with 13 hours 36 minutes to 13 hours 31 minutes. The narrowness of that margin matters more than its winner, because the Xiaomi carries a battery roughly 55 percent larger. In a long human story about how much work we can extract from limited stored energy, the result suggests that efficiency can close a gap that raw capacity seemed to guarantee.
At the end of a long battery drain run by the YouTuber behind TechDroider, the Xiaomi 17 Pro Max went dark at 13 hours and 36 minutes. The iPhone 17 Pro Max had given out five minutes earlier. On paper that is a narrow Xiaomi win, but the hardware makes it read differently.
The Xiaomi carries a 7,500mAh battery, about 55 percent larger than the 4,823mAh cell in the tested iPhone. That was the non-eSIM model, which has the smaller battery; the eSIM version carries 5,088mAh. Wccftech sees the near-tie as a sign of Apple's advantage in performance per watt, the work a phone extracts from each unit of energy. It also raises silicon-carbon batteries as a possible future step for Apple, though that remains speculation.
Heat may have played a part. The Xiaomi ran hottest at 47.6 degrees Celsius and briefly passed its maximum threshold, forcing a pause. The iPhone stayed near 43 degrees, which Wccftech credits to its vapor chamber. Wccftech also suggests Xiaomi's custom interface may have drained more power, though the test did not establish that.
The rest of the field finished well behind: the Xiaomi 15 Pro at 12h31m, the OnePlus 13 at 11h56m, the Pixel 10 Pro XL at 11h28m, and the Galaxy S25 Ultra at 11h20m. The order shifted from an earlier run, a reminder that one test has limits. Whether other tests reproduce this near-tie is the question still open.
At the end of a long battery drain run conducted by the YouTuber behind TechDroider, the Xiaomi 17 Pro Max went dark at 13 hours and 36 minutes. The iPhone 17 Pro Max had already given out five minutes earlier, at 13 hours and 31 minutes. On paper, that is a narrow win for Xiaomi. Set against the hardware inside each phone, it reads differently.
The Xiaomi 17 Pro Max carries a 7,500mAh battery. The iPhone 17 Pro Max in this test had a 4,823mAh cell, which makes Xiaomi's battery about 55 percent larger. Wccftech's reading is that the gap in capacity and the near-tie in runtime point to Apple's advantage in performance per watt, the amount of work a phone gets out of each unit of energy.
The iPhone in the test was the non-eSIM version, which has the smaller battery. The eSIM model of the iPhone 17 Pro Max has a larger 5,088mAh cell. So the unit tested was, if anything, slightly disadvantaged compared with the other variant, yet it still finished within five minutes of a phone with a much bigger battery. Wccftech also raises the question of what would happen if Apple moved to silicon-carbon batteries, the denser cells that allow rivals to fit more capacity into a phone. That is speculation, not a result.
The test included four other flagships. Behind the top two came the Xiaomi 15 Pro at 12 hours 31 minutes, the OnePlus 13 at 11 hours 56 minutes, the Pixel 10 Pro XL at 11 hours 28 minutes, and the Galaxy S25 Ultra at 11 hours 20 minutes.
Temperatures were recorded as well. The Xiaomi 17 Pro Max ran hottest of the group at 47.6 degrees Celsius, with the Xiaomi 15 Pro close behind at 47.4. The iPhone 17 Pro Max stayed at 43.1 degrees. The OnePlus 13 recorded 43.5, the Pixel 10 Pro XL 42.6 and the Galaxy S25 Ultra 45. Wccftech credits the iPhone's vapor chamber for its better thermals compared with the Xiaomi 17 Pro Max.
The heat may have affected the Xiaomi's result. At one point in the run, the phone's temperature went past the maximum threshold, and the YouTuber had to pause the test briefly. Wccftech suggests Xiaomi's custom interface could have caused heavier battery drain, though that is offered as a possibility rather than something the test established.
The ranking also differs from an earlier test. This time the Pixel 10 Pro XL beat the Galaxy S25 Ultra, whereas in the previous run Samsung's phone came out ahead of Google's, and then fell short of the iPhone 17 Pro Max. That shuffling is a reminder that a single run has limits.
What to watch next: whether other tests reproduce the near-tie between the two phones, and whether Apple eventually adopts silicon-carbon batteries.
Citazioni salienti
Wccftech says rivals with huge batteries still cannot match the iPhone 17 Pro Max's performance per watt.— Wccftech
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