Most battery tips you find online are either obvious or make you feel like you’re babysitting your phone. What does make a difference is changing a handful of settings that most people never touch because they don’t know why they matter. I’ve run the same setup on every phone I’ve owned for years, and the gap between my battery and my wife’s on the same device is hard to argue with.

Set your dark mode to turn on automatically at bedtime

Your screen stops drawing power when pixels turn black

One of the first things I do when setting up a new phone is schedule night mode to kick in around bedtime. It sounds like a small thing, but it actually makes a real difference in how much battery you burn through at night. Most modern smartphones use OLED screens, and the way those panels work makes dark mode genuinely useful instead of just easy on the eyes.

Unlike older LCD screens, which keep a backlight running constantly behind the whole display, OLED screens light up each pixel individually. That means when a pixel needs to show black, it turns off entirely and draws no power at all. So the darker your screen, the less electricity it uses.

It also feels better on your eyes. I tend to do it manually, so knowing that it will turn on after a certain time lets me get the benefit without doing it myself. You set the hours once in your display or clock settings, depending on your phone. Then you can just forget about it and go about your business.

Cap your maximum charge at 80 percent

Stopping at 80 percent keeps the battery from wearing down

Every phone I set up gets this treatment without exception. I go into the battery settings and cap the maximum charge at 80 percent. It sounds a little odd to voluntarily give up a fifth of your battery, but it’s genuinely the single best thing you can do to keep your phone from dying on you within a few years.

The lithium-ion batteries in modern smartphones degrade over time as the internal electrodes wear down from repeated charging. That wear isn’t spread evenly across the charging curve. If you push it too far, you’ll get unwanted reactions building up, metals migrating from one side of the battery to the other, and a layer of resistance slowly growing inside the cell. Each time you push to 100 percent, you’re shoving the battery through the worst part of that process, and it adds up fast.

Stop at 80 percent instead, and you sidestep most of that damage. The stress on the cell drops dramatically, the side reactions slow way down, and the battery materials last much longer. My wife and I got the same phone at the same time. I capped mine, and she didn’t, but mine still acts brand-new. The back of hers fell apart, and it’s slow.

This single-handedly made my phone last for years as if it were brand new.

Turn off or reduce your phone animations

Your phone works harder than it needs to just to make transitions look smooth

I hate system-wide animations because they feel so unnecessary. Most people don’t think twice about the little fades and transitions that play when you open or close an app, but those effects are doing real work behind the scenes against your battery.

When you swipe to your home screen or tap into an app, your phone isn’t just showing you the next screen. It’s running a whole chain of calculations to smoothly shift things around. It is moving elements, adjusting transparency, and applying transformations. All of this happens before and while the actual interface is even drawn.

I hate this because none of that work is doing anything useful for you. It’s purely cosmetic, and the GPU is burning through power to make it happen.

Blur effects are a good example of how needless this is. A single background blur can take several separate rendering passes. Your phone has to shrink the image, blur it horizontally and vertically, and then scale it back up. Each one adds to the GPU’s workload.

On a high-refresh-rate display where frames need to land every few milliseconds, all of that adds up quickly, pushing the GPU to run at higher clock speeds and generate more heat in the process.

Just turn it off; you won’t even notice it.

Lock your screen refresh rate to 60Hz

Strong refreshes are for TVs and monitors

High refresh rates make your processor work twice as hard. In my opinion, motion smoothing is one of the worst things to ever happen to animation. I understand why it exists, but it is not as helpful as people make it out to be. One adjustment I make on every device to get more battery life is locking the screen refresh rate to 60Hz instead of letting it run at 90Hz or 120Hz.

High-refresh-rate screens have become a big selling point over the last few years, and while they do look noticeably smoother, they drain more power. At 60Hz, the display has about 16.6 milliseconds to render each frame. Bump that up to 120Hz, and that window gets cut in half, which means the processor and GPU are doing twice the work in the same amount of time just to keep up.

It is a smartphone, not a monitor or a television. You do not need it to have the best refresh rate ever. A higher refresh rate means more power, and more power means more heat. The phone is essentially running harder in the background at all times just to make scrolling look better.

The good news is that dropping back to 60Hz doesn’t actually break anything. Your apps work the same, videos play fine, and you can still do everything you normally would. The only thing you lose is the extra smoothness, which most people stop noticing after a few minutes, anyway.

Shut off the always-on display

Keeping the screen alive means the hardware never rests

The last thing I do on every device is turn off the always-on display if it is on. A lot of people assume this barely matters because OLED screens work by shutting off black pixels entirely, so showing just a clock on a dark background must use almost no power.

Technically, that’s not wrong. A mostly black standby screen can draw as little as 5 milliwatts. However, the screen being mostly off isn’t the whole picture. The issue is that keeping the display alive at all means the underlying hardware never actually rests.

On most phones, the display backplate has to keep refreshing those active pixels at 60 or even 120 times per second just to stop the image from flickering or degrading. That refresh cycle burns through power inside the display driver chip, whether you’re looking at the screen or not. Even on higher-end phones with LTPO displays, which can drop to a 1Hz refresh rate, the display hardware still draws current continuously.

Turn off the always-on display, and your phone can actually go dormant when it’s sitting in your pocket. The display driver powers down, the processor stops getting nudged awake, and the battery you would have burned will be ready when you need it.

It just takes a few minutes of setup

None of these changes cost anything, and most of them take about ten minutes total to set up. However, if you’re the kind of person who notices your battery quietly getting worse every few months and wonders why, these are the settings I’d point you to first. They’re not flashy fixes, but they’re the ones that actually hold up over time.

SoC

Snapdragon 8 Elite Gen 5

Display

6.7-inch Dynamic AMOLED 2X

The Samsung Galaxy S26+ is a premium, large-screen smartphone that serves as the middle option in Samsung’s high-end lineup.