TechRadar tests six foldable phones for battery life

TechRadar writer Nirave Gondhia says he tested six globally available flagship foldable phones over several weeks to compare battery life. The article describes tests using CellMark, a battery-testing suite Gondhia says he developed with AI models over several months.

The EnduranceMark suite ran until each phone reached 5% battery. Gondhia says a test counted as valid only if it drained 80% of the battery. He also used ChargeMark to record charging times, tested web browsing with a script that loaded 20 web pages, and looped locally stored 4K video at 50% brightness. Gondhia cautions that the tests do not fully represent real-world use.

In the reported results, the Galaxy Z Fold 8 reached a full charge in 69 minutes at 45W. The Galaxy Z Fold 8 Ultra also charged at 45W and reached a full charge in one hour. Gondhia says the Oppo Find N6 led the charging comparison, while the Google Pixel 11 Pro Fold ranked last. Apple says the iPhone Duo can reach 50% charge in 20 minutes with 60W charging, but has not published an estimate for a full charge.

For video playback, Apple claims up to 35 hours on the iPhone Duo’s inner screen and up to 44 hours on its outer display. Under heavy loads, Gondhia reports about 5.5 hours of battery life for the Galaxy Z Fold 8 and Fold 8 Ultra. He says the Pixel 11 Pro Fold was optimized for the test, while Motorola, Honor, and Oppo delivered better battery performance and battery-life balance. The provided article text ends mid-sentence.