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Xiaomi's 17 Pro Max arrives with a headline-grabbing 7,500mAh cell — and our battery and charging tests show it uses that capacity wisely. In real-world scenarios the phone sticks around noticeably longer than many rivals, but its large battery also changes the charging trade-offs. Here’s a clear look at the numbers and what they mean for daily use.
Endurance that wins everyday tests
On paper, 7,500mAh sounds massive, but the proof is in the benchmarks. The 17 Pro Max posted an overall active use advantage of roughly four hours over Xiaomi's own 15T Pro (which has 2,000mAh less capacity). That translates into tangible gains where it counts: the 17 Pro Max delivered about 12 extra hours in the voice call test and eked out a few more minutes in continuous video playback.
Across our standard endurance metric the handset reached 29:00 hours — an impressive result that places it among the better long-lasting flagships. If you want the single best active-use score, the Oppo Find X9 Pro still edges it out, but Xiaomi's balance of runtime and performance keeps the 17 Pro Max competitive.
- Endurance rating: 29:00 hours
- Call test: ~12 hours longer than the 15T Pro
- Active use advantage: about 4 hours over the Xiaomi 15T Pro
Charging: fast, but realistic
Big batteries change the charging conversation. The 17 Pro Max ships with a 100W HyperCharge brick, and while it charges quickly for the size of the battery, the times are not as dramatic as smaller-cell competitors.
Key charging highlights:
- 15 minutes on the 100W charger: ~42% battery restored — a strong start and on par with last year’s 15 Ultra.
- 30-minute mark: the 15T Pro (with a smaller cell) leads slightly, but the 17 Pro Max remains a close second. By contrast, the Find X9 Pro sits around 54% at this point.
- Full charge: 1 hour and 2 minutes to reach 100% — a respectable time for a 7,500mAh pack and slightly faster than the Find X9 Pro.
In short, you get very usable top-ups in short windows — ideal when you need a quick boost — and a complete recharge in just over an hour. That’s a practical combination for heavy users who value long runtime but don’t want to wait ages to top up.
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How it compares to other flagships
Compared to Xiaomi’s own 15T Pro and 15 Ultra, the 17 Pro Max trades some charge speed for noticeably greater endurance. Against Apple and Google flagships, the difference is clearer: the iPhone 17 Pro Max and Pixel 10 Pro XL have smaller batteries and shorter total runtimes in our tests, though they may win in other areas such as thermals or sustained performance.
Put simply: if you prioritize day-plus battery life and strong mid-range charging, the Xiaomi 17 Pro Max is one of the most practical flagship choices right now. If ultra-quick top-ups are your priority above runtime, phones with smaller batteries or more aggressive charging curves will finish charging faster in the first half hour.
Imagine heading out for a long day with heavy calls and streaming — the 17 Pro Max gives you the confidence to leave the charger behind more often, and when you do plug in, the 100W HyperCharge gets you back to comfortable levels quickly.
Source: gsmarena
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