According to tipster Lanzuk (@yeux1122), Samsung is testing silicon-carbon anode batteries for the Galaxy S27 series but has not decided whether to bring the technology to every model or limit it to the Galaxy S27 Pro and Galaxy S27 Ultra. The decision reportedly comes down to the higher cost of the newer battery technology. As a result, the Galaxy S27 and Galaxy S27+ may not receive bigger batteries than their predecessors. RAM and storage chip prices have risen drastically over the past two years, substantially increasing the manufacturing costs of consumer electronics, including smartphones. So, even if Samsung wants to bring silicon-carbon batteries to the Galaxy S27 and Galaxy S27+, higher costs could prevent it from doing so.