Xiaomi Watch 9 BatteryTest: 3 Days of Heavy Use, No Battery Level Expected to Drop
To be honest, before receiving the watch, I was skeptical of the official claims about its long battery life. After all, smartwatches these days have more and more features, and brighter screens; it’s no wonder battery life is so limited. But this time, I was proven wrong.
To test its limits, after fully charging, I deliberately didn’t use any power-saving settings. I kept the always-on display, scientific sleep monitoring, and all-day heart rate monitoring enabled, and even message notifications and several outdoor running records.
Day 1 Night: Before going to bed, I checked the Xiaomi Watch 9’s battery level: 95%. It barely lost any power on the first day, and I wondered if the display was inaccurate.
Day 2 Night: After a whole day of frequently raising my wrist to check the time, receiving WeChat notifications, and wearing it while sleeping for monitoring, the battery still had 88%.
Day 3 Afternoon: This is the third day of use, and the battery level is now at 80%. Three days of heavy use only consumed 20% of the Xiaomi Watch 9 Battery
What does this mean? If you only use it normally and don’t engage in high-intensity GPS-enabled activities, a two-week battery life for this watch might actually be a reality.
Why is the Xiaomi Watch 9’s battery so power-efficient?
This isn’t just due to its large battery capacity, but also the result of optimized hardware and software. Although it has a built-in 470mAh battery, which isn’t the largest for a smartwatch, thanks to its low-power chip and Xiaomi’s Surge OS 2.0 system-level power-saving optimizations, every milliampere of power is used efficiently.
Here are a few tips to further save power and achieve this “insane battery life”:
Choose “Power Saving Mode” according to your needs: If you’re not a heavy user, you can turn on the long battery life mode, turning the watch into a “larger fitness tracker,” effectively doubling the Xiaomi Watch 9’s battery life.
Control “Screen On”: In the app, lower the sensitivity of “Raise to Wake” or turn off Always-On Display (AOD). This is the biggest drain on the Xiaomi Watch 9 Battery
Background Management: Turn off notifications from infrequently used apps, keeping only key notifications like WeChat and phone calls enabled. This keeps things quiet and saves power.
After using it for a few days, the most noticeable difference is: I forget where I put my charger. With other watches, I always had to constantly monitor the battery level, panicking when it dropped below 30%. Now? On a three-day business trip, I didn’t even bother bringing the charger. This feeling of not having to worry about the battery at all allows a smartwatch to return to its essential function as a “watch”—always there, never disconnected.
If you’re also fed up with smartwatches that require daily charging or even twice a day, the Xiaomi Watch 9 might truly be the answer to yourXiaomi Watch 9 Batteryanxiety. After all, a watch is meant to serve you, not be pampered by you every day.
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