The ASUS ROG Phone III Review: A 144Hz 6000mAh Beast With Caveats

Battery Life - The Best

The previous generation ROG Phones have impressed us a lot when it comes to their battery life, and that’s easily attributed to the massive 6000mAh battery that’s included in the 240g heavy phone.

The ROG Phone III this year doesn’t increase battery capacity, but does feature a more efficient SoC that should showcase even better results. The minor bump to 144Hz shouldn’t come with a notable power consumption increase.

As expected, the ROG Phone III is topping our battery life charts. At 60Hz refresh rate, the new phone slightly edges out the older ROG Phone II with an astounding 16.51h runtime.

Turning on the 144Hz refresh rate comes with a large 22% hit in battery life, but in absolute terms it still maintains an excellent 12.9h runtime, making this the longest-lasting phone amongst the 120Hz+ crowd.

In PCMark, the improved power efficiency of the new SoC is further exposed, with the newer generation having a bigger leap of the Snapdragon 855 ROG Phone II.

The absolute battery life runtimes here are outstanding.

Overall, there’s very little to say about the ROG Phone III’s battery life other than it being class-leading. There’s no other flagship device out there with such great battery life, as vendors only employ such huge battery capacities in lower-end devices. You have to pay the price in terms of device weight, but you’re also getting a lot in return.