Samsung said the Galaxy Z Fold8 Ultra uses a 5,000 mAh battery and 45 W fast charging, reaching 67% in 30 minutes after a broader battery-system redesign.
Flex Titanium under the display cut display-module thickness by 10%, Samsung said, creating room for the battery, thermal system and camera while improving strength, flatness and crease reduction.
Sunghoon Moon said the latest Z series was engineered as one connected system, with display, hinge, battery and internal architecture redesigned together to make devices thinner and lighter without sacrificing durability.
More than 100 reliability tests covered drops, repeated folding, pressure, moisture and debris, underscoring Samsung's push to prove long-term durability in its eighth-generation foldables.