Samsung Galaxy Z Fold 8, Fold 8 Ultra, and Flip 8 battery life tested — silicon carbon pays off

Phones Android Phones Samsung Phones Samsung Galaxy Z Fold 8, Fold 8 Ultra, and Flip 8 battery life tested — silicon carbon pays off Features By John Velasco Published 25 July 2026 Here's how long they last When you purchase through links on our site, we may earn an affiliate commission. Even though I personally don't mind topping off at some point during the workday, doing so can be a deal breaker for anyone who craves all-day endurance.With the launch of Samsung’s new foldables, they certainly have a lot to prove — more so when they’re also some of the thinnest and lightest models to date. What’s different this time is how Samsung engineered the phone to be thinner and lighter than its predecessor without compromising on battery capacity.The new flip-style phone clocks in at 12 hours and 50 minutes, representing a 3.5% increase over the Flip 7’s 12:24 runtime.