How to maximise Redmi 15 battery life for all-day endurance

The Redmi 15 already packs a massive 7,000mAh battery, but with the right settings, you can extend its life even further. For UK users who rely heavily on mobile data, streaming, and social apps, optimising battery settings can make a noticeable difference in daily endurance.

Start by adjusting the screen refresh rate. The Redmi 15’s 144Hz display offers smooth visuals but consumes extra power. For general use, switching to 60Hz or enabling the adaptive refresh mode saves energy without affecting performance. You can find this option under Display Settings.

Next, turn on Battery Saver mode when you know you’ll be away from a charger for long hours. Xiaomi’s HyperOS 2 includes both standard and ultra modes, reducing background app activity and limiting visual effects. The ultra mode can add several hours of standby time, ideal for long commutes or travel.

Adjusting screen brightness also helps. Keeping brightness at around 50–60% is sufficient for most indoor use. Enabling Adaptive Brightness allows the phone to automatically reduce brightness when you’re indoors, cutting down unnecessary drain.

Disabling background sync for non-essential apps makes a big impact. Go to Battery and Performance settings, check App Battery Usage, and restrict apps that don’t need constant updates — especially social media, mail, and cloud backup tools. This ensures that only important notifications come through while idle.

Turning off 5G when not needed is another effective tip. While the Redmi 15 primarily supports 4G networks in the UK, keeping network selection on automatic or 4G-only mode prevents unnecessary signal searching, improving efficiency and reducing standby drain.

You can also save power by switching off Always-on Display, Bluetooth, and GPS when not actively using them. Many users forget these toggles, but they can quietly consume battery even in the background. Quick Settings offers easy access to disable them with a single swipe.

In Settings, enable Sleep Mode during night hours. This feature lowers background activity, restricts data usage, and dims the screen for minimal power use overnight. It’s a subtle but effective way to retain charge for the next day.

Cleaning up apps from the Recents screen doesn’t always help, but limiting auto-start permissions does. Go to Permissions → Auto-start and disable it for apps you rarely use. This stops unnecessary processes from running when the device boots.

Finally, take advantage of the built-in Battery Health feature to monitor long-term performance. Avoid letting the phone discharge below 10% too often, and try to keep charging between 20–80% for optimal battery longevity. The included 33W charger is designed to balance speed with safety, preventing heat build-up.

With these simple adjustments, the Redmi 15 can easily last two full days of typical UK use — even with heavy social media, video, and browsing. The combination of a large battery and smart power management makes it one of the most efficient mid-range phones currently available.

Also Read:  Moto G67 Power offers a perfect balance of price and power