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Samsung Reportedly Targeting Bigger Battery for Galaxy S27 Ultra

Leaks say silicon‑carbon battery tech could raise capacity without enlarging the phone.

Overview

  • Tipster posts this week reported Samsung tested five S27 Ultra prototypes and is now developing a battery target around 5,700–6,000mAh, a jump from the S26 Ultra’s 5,000mAh.
  • Those same leaks say one prototype removed the built‑in S Pen to fit a 7,000mAh cell, but Samsung appears to be keeping the S Pen in current designs.
  • CAD renders and multiple leakers indicate a four‑model S27 family — S27, S27 Plus, S27 Pro and S27 Ultra — with the Pro adopting Ultra styling but likely omitting an S Pen slot.
  • Design leaks show the Pro and Ultra moving to a wide horizontal camera plateau, while the regular S27 and S27 Plus look mostly unchanged from the S26.
  • All details come from unconfirmed leaks and supply‑chain reporting, and final specs, regional availability, pricing and the expected early‑2027 launch could still change.