Samsung to use silicon-carbon batteries in Galaxy S27 Ultra

Samsung is reportedly planning to significantly increase the battery capacities of its upcoming Galaxy S27 Pro and S27 Ultra smartphones, potentially marking the end of a seven-year period where its top-tier phones were capped at around 5,000mAh. According to recent reports, the new capacities suggest Samsung will extend its newly introduced silicon-carbon battery technology from its latest foldables to its conventional flagship models next year.

The Galaxy S27 Pro is rumored to feature a battery with a rated capacity of 5,087mAh, which would likely be marketed with a typical capacity of 5,200mAh. The larger Galaxy S27 Ultra is said to carry a rated capacity of 5,534mAh, potentially advertised as 5,700mAh or even 5,800mAh. These figures would represent a clear upgrade from the Galaxy S26 Ultra, which features a 5,000mAh typical capacity. The increased capacities strongly indicate the use of silicon-carbon anode batteries, a technology Samsung recently debuted in its Galaxy Z Fold 8 and Z Flip 8 series. This technology replaces some graphite with silicon in the battery anode, allowing more energy to be stored within the same physical space without necessarily increasing device...