The Galaxy Z Fold 8 debuts a larger battery and faster charging speeds compared with the Fold 7, featuring a 4,800 mAh pack, wired charging up to 45W, and 20W wireless charging. Samsung also introduces silicon‑carbon cell technology across the Z8 series.
Product positioning has shifted: the classic Fold form factor now passes its name to a wider model — the “Fold 8” — while the more familiar form is marketed as the “Ultra.” The Fold 8 adopts an unprecedented, broader profile and abandons a conventional rear camera, changes that partially explain its revised internal layout and the new battery architecture.
Battery and charging — key figures
– Capacity: 4,800 mAh
– Wired charging: 45W
– Wireless charging: 20W
For comparison, the Galaxy Z Fold 7 used a 4,400 mAh battery with 25W wired charging and 15W wireless charging. On all three counts — capacity, wired charging, and wireless charging — the Fold 8 represents a clear upgrade.
Silicon‑carbon: a change in cell chemistry
The Galaxy Z8 is Samsung’s first foldable lineup to adopt silicon‑carbon–based batteries. Samsung positions this change as a differentiator for cell longevity and performance, and the Fold 8 directly benefits from the new chemistry.
A redesigned form factor that imposes new constraints
The Fold 8 is more than an internal update: its wider profile and the removal of the rear camera alter component distribution inside the chassis. Those design choices help explain the increased battery capacity and the need for a new battery architecture.
In short, the Galaxy Z Fold 8 distinguishes itself with a larger battery and noticeably faster charging, supported by new cell chemistry — a solid foundation for this new direction in Samsung’s foldable lineup.
