Samsung Galaxy Z Fold 8 Ultra Hits 14-Hour Battery Life as 45W Charging Reaches 76%
Updated
Updated · Tom's Guide · Jul 25
Samsung Galaxy Z Fold 8 Ultra Hits 14-Hour Battery Life as 45W Charging Reaches 76%
3 articles · Updated · Tom's Guide · Jul 25
Summary
14 hours 9 minutes of tested battery life put Samsung’s Galaxy Z Fold 8 Ultra 31.8% ahead of the Fold 7’s 10:44 and 15.3% above the Pixel 10 Pro Fold.
Silicon-carbon batteries and Snapdragon 8 Elite Gen 5 chips drove the gains, while Samsung also lifted wired charging across the 2026 foldable lineup to 45W from 25W.
76% charge in 30 minutes and 49% in 15 minutes made the Fold 8 Ultra the fastest of Samsung’s new foldables, topping the Fold 7’s 54% and edging the Motorola Razr Fold’s 73%.
12:20 battery life for the standard Fold 8 marked a 14.8% improvement, while the Flip 8 rose a modest 3.5% to 12:50 and still trailed Motorola’s Razr Ultra at 16:20.
Samsung’s results suggest battery life is becoming less of a foldable trade-off, with the Fold 8 Ultra emerging as the standout model in the company’s 2026 lineup.