Silicon-carbon batteries were the best phones for eyebrow-raising battery life, and the Realme P4 Power packs one of the biggest batteries we’ve seen in a phone. It sets the benchmark even higher with a 10,001mAh battery. By comparison, this is twice the capacity we see in standard phones like Samsung Galaxy S26 Ultrawhich includes a 5,000mAh battery.
Realme’s phone surpasses what we’ve seen in other phones with this type of battery, including OnePlus 157,300mAh battery and battery RedMagic 11 Pro7,500mAh battery. Phones with batteries of this scale offer two days of use and often have fast charging speeds to go with them.
The Realme P4 Power is available in India right now — it’s unlikely to ever make it to the US — but despite its chart-topping battery capacity, it’s cheap at INR 25,999, or about $285. It’s just a bit more than the existing 10,000mAh battery Respect Winwhich I tried last year but I didn’t get more time to really test it.
That’s why I was happy to put my SIM in the Realme P4 Power, when I was able to test this phone in all of CNET’s battery tests, using it as my primary device and as a power bank for my iPhone on the road.
All that battery without major problems
It doesn’t sacrifice design or features to fit a bigger battery.
The best part about the Realme P4 Power is that it doesn’t sacrifice comfort for more battery capacity. It’s not a thin and light phone but with a size of 9.1mm and a weight of 219g, it’s lighter than other flagship phones, including iPhone 17 Pro Max again Google Pixel 10 Pro XL.
Realme’s TransView Design has a light appearance around the camera module, highlighting its “Power” logo. I love this unique design and feel in the hand. It has curved corners as well as slight curves on the back which makes it easy to hold. (Please note, Samsung.)
The Realme P4 Power has a plastic back and frame, while the front is protected by Gorilla Glass 7i. It is also rated for durability with IP66, IP68 and IP69 dust and water resistance ratings. This means, it can survive immersion in fresh water and high-pressure water jets and is also protected against small dust particles.
Up front, you get a 6.8-inch AMOLED display with 2,800×1,280 pixel resolution, 144Hz refresh rate, 1,800 nits brightness and 6,500 nits peak brightness for HDR-supported content. Like most phones, you have to manually set it to a higher resolution and refresh rate to use these features.
The screen is easy to read from the outside.
I had no problems with the screen, and using the curved panel after a long time was a refreshing experience. It was easy to read on the outside, and I enjoyed watching the videos. However, I don’t like the absence of stereo speakers. The device has a single speaker at the bottom; while it’s loud, you’ll need to plug in your earbuds to get a better movie experience.
I used the Realme P4 Power in everyday life, including doomscrolling in social media apps like Instagram and X, answering emails and messages in Gmail, WhatsApp and Slack, navigating maps and taking a few photos. It comfortably lasted me up to two days of normal use and one and a half days of heavy use. And if you need to charge it, you can use the integrated charger to fill the battery with 80 watts.
To better judge Realme’s new phone, I put it through CNET’s 3-hour video streaming test and 45-minute battery endurance test.
Realme P4 Power battery benchmarks
| YouTube streaming download test starts at 100% | 45 min battery life | |
|---|---|---|
| Realme P4 Power | 1 hour: 97%; 2 hours: 95%; 3 hours: 91% (144Hz) | 100% to 99% |
| Apple iPhone 17 Pro Max | 1 hour: 100%; 2 hours: 96%; 3 hours: 91% (1-120Hz) | 100% to 99% |
| OnePlus 15 | 1 hour: 98%; 2 hours: 94%; 3 hours: 90% (1-120Hz) | 100% to 97% |
| Samsung Galaxy S26 Ultra | 1 hour: 97%; 2 hours: 92%; 3 hours: 87% (1-120Hz) | 100% to 95% |
In a video streaming test, where I streamed a video over Wi-Fi with the screen on full brightness and the battery starting at 100%, it lost 3% battery per hour and ended up at 91%. This puts it at the top of CNET’s charts alongside the iPhone 17 Pro Max, followed by the OnePlus 15 (90%) and the iPhone 17 (89%).
It performed equally well during CNET’s 45-minute endurance test, where we played games, streamed videos, scrolled through social media and took a video call with the battery starting at 100%. Realme P4 Power ended up losing only 1% battery, sharing the top spot with iPhone 17 Pro Max by 99%.
What about everything else?
Realme’s “Power” branding is emphasized by its flexible design around the camera module.
The Realme P4 Power has a MediaTek Dimensity 7400 Ultra chipset, paired with up to 12GB RAM and 256GB storage. (The base model has 8GB of RAM and 128GB of storage.) This is more than a midrange chip in the same category as the Motorola Razr‘s Dimensity 7400X. It handles daily tasks smoothly, and has no major flaws. In terms of minor issues, I noticed that apps take longer than usual to load sometimes and the camera app takes a few seconds to process, but these issues are not a deal breaker.
Realme’s user interface is smooth, fast and highly customizable. Same with OnePlus and Oppo. However, you get a lot of preloaded apps. (I uninstalled them as soon as I set up the phone.) Overall, this Realme UI 7.0 (supported Android 16) is fast and responsive. You’ll get three years of Android OS upgrades and four years of security upgrades.
The Realme P4 Power has two rear cameras and a 16-megapixel selfie shooter on the front. You get a 50-megapixel primary camera and an 8-megapixel ultrawide-angle sensor on the back. A number of AI-powered tools are available to help you improve or edit a shot.
The camera system is satisfactory for a budget smartphone.
It delivers a satisfying camera experience. During the day, the P4 Power can capture stunning images. Colors are very accurate, contrast is balanced and dynamic range is decent. It processes 2x portraits digitally, which works well for the most part, but sometimes, certain areas can feel like they’re cropped — like you’re pasted on the background.
Overall, the Realme P4 Power is a great phone with its excellent battery life. I expected it to perform well with its 10,001mAh battery, but I didn’t expect it to blow away all the other Android phones in our tests. I like it a lot because this battery medicine is accessible to many people, due to its low price and it can be installed at the gate of more expensive models.
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