Key Takeaways
1. A direct comparison of battery life between the Xiaomi 17 (7,000mAh) and iPhone 17 (3,692mAh) may not be fair due to the significant difference in battery capacity.
2. Xiaomi’s promotional video shows the iPhone 17’s battery life lasting 12 hours and 14 minutes with a 5,000mAh MagSafe battery, but much of that capacity is lost due to inefficiencies in wireless charging.
3. The iPhone 17 is tested under specific conditions (low brightness, airplane mode, video loop), which do not accurately represent typical usage.
4. Apple claims the iPhone 17 can last up to 30 hours of video playback, but this figure is theoretical and not necessarily reflective of real-world performance.
5. The Xiaomi 17 is currently not widely available in global markets, with a smaller battery expected for the global version, while the iPhone 17 is readily available for purchase.
Is it really right to pit a smartphone boasting a 7,000mAh battery against one with a 3,692mAh capacity? Likely not, so a direct battery life test between the Xiaomi 17 and iPhone 17 would yield predictable results. However, Xiaomi’s recent promotional video on Weibo takes this matchup to a whole new level, adding some intrigue to the scenario. After roughly 5.6 hours, when the iPhone’s battery level hits just 20 percent, they attach a 5,000mAh MagSafe battery to the back of the iPhone 17.
Capacity Calculations
This setup gives the iPhone 17 a theoretical total power capacity of 8,692mAh (3,692mAh + 5,000mAh), although that figure isn’t very realistic. Due to energy loss during the magnetic wireless charging process, a large portion of the 5,000mAh isn’t really usable. About one-third is likely wasted, considering the common inefficiencies of wireless charging. Even so, it’s a disappointing result for Apple enthusiasts when the test concludes after just 12 hours and 14 minutes for the iPhone 17. At that moment, the Xiaomi 17 still has 26% of its battery left.
Test Conditions
Xiaomi stated that the test was performed with the screen brightness set to a low 150 nits, airplane mode on, and a video loop playing in a social media application, which doesn’t reflect real-world use very well. Apple claims that the iPhone 17 can last up to 30 hours of battery life while playing videos, but that number is also theoretical. Since this is a promotional video from Xiaomi, one should view the findings with skepticism. While the iPhone 17 is currently available for purchase, the Xiaomi 17 with its hefty 7,000mAh battery can only be imported into Europe and North America. Regrettably, the global version will have a smaller battery.
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