Ulefone Armor 33 Series: The Truth About Its 25,500mAh Battery Life

Ulefone is back with its latest rugged lineup, the Ulefone Armor 33 series, and this time, the focus is on battery life. Both models in the Ulefone Armor 33 series pack an enormous 25,500mAh battery. This is easily one of the biggest you’ll find in a smartphone. This puts them in a league of their own when it comes to endurance.

The series includes two models. The Ulefone Armor 33 Pro features a dual-screen setup that sets it apart, while the regular Armor 33 comes with a built-in LED light and warning light, designed for outdoor use. Both phones are aimed at adventurers and professionals who need a device that won’t let them down. Sales officially begin on August 18, with early bird discounts on AliExpress starting at $399.99 for the Pro and $299.99 for the standard model. They’ll also be available on Amazon and Ulefone’s online store at the same time.

The headline feature is obviously the battery. With 25,500mAh on board, Ulefone claims the Ulefone Armor 33 can last up to 10 days of use — that’s roughly three times longer than a typical smartphone. In real-world tests, the phone barely sipped power. Playing PUBG for an hour only drained 1%, two hours of video playback dropped it to 95%, and a one-hour video call left it at 90%. In another test, it managed to record video continuously for 20 hours and 30 minutes straight.

A battery this big could raise safety concerns, but Ulefone has that covered. The Ulefone Armor 33 uses multi-layer protection and a low-temperature solid-state design. It meets international flight safety standards, so you can take it on planes or trains without worry. It’s also designed to withstand harsh environments, with an operating range of -30°C to 55°C.

Despite its size, the phone charges quickly thanks to 66W fast charging. A short charge is enough to get you going again, and the tech is designed to help keep the battery healthy over time. Additionally, it supports 10W reverse charging, allowing you to top up your earbuds, smartwatch, or even another phone in a pinch.

The Ulefone Armor 33 Pro gets the most advanced hardware in the lineup. It is powered by a Dimensity 7300X chip, paired with 16GB of RAM and 512GB of storage. For cameras, it offers a 50MP main lens, a 64MP night vision camera, and a 50MP ultra-wide macro lens, giving it a surprisingly versatile camera setup for a rugged device.

To kick off the launch, Ulefone is offering an early bird discount on August 18. The Armor 33 Pro and Armor 33 will be up for grabs on AliExpress, Amazon, and Ulefone’s official store at the special launch prices mentioned above.

If you’re after a rugged smartphone that can truly last days without charging, the Armor 33 series might be the most practical option on the market right now.