Samsung’s flagship lineup for 2025 is generating considerable interest, with discussions about next-generation enhancements already underway. Speculation suggests significant modifications in the Galaxy S25 series, particularly regarding the battery capacity.
Recent leaks indicate that the Galaxy S26 Ultra may be equipped with an impressive 7,000mAh battery, which represents an increase of 2,000mAh compared to this year’s model. This assertion is quite ambitious, particularly in light of the advancements observed in recent years.
In parallel, it has been some time since Chinese smartphone manufacturers adopted silicon-carbon battery technology. This innovation provides enhanced energy density, enabling significantly larger battery capacities to fit within the same physical dimensions. Consequently, 6,000mAh batteries have nearly become the standard for numerous Chinese smartphone brands.
Samsung May Not Join the Race too Soon
However, will Samsung participate in this battery competition soon? According to tipster @PandaFlashPro, the answer is negative.
“I will deactivate my Twitter account if Samsung equips the Galaxy S26 Ultra with a 7000mAh or even a 6000mAh battery, I assure you. Based on my five sources, the internal Samsung Test Lab appears to have a maximum capacity of only 5500mAh,” he asserts.
The strategy employed in the US smartphone market markedly differs from that of China. Consequently, it would not be unexpected for Samsung to incorporate silicon anode battery technology while only marginally enhancing battery capacity, or to continue utilizing its existing technology for several more years. This is particularly true given that Samsung does not face significant competitive pressure in most markets outside of China, especially in the absence of similar advancements from Apple.
Additionally, it is important to highlight that Samsung has recently shown a renewed interest in producing slimmer phone designs. The company launched the relatively thinner Galaxy Z Fold SE last year, and this year it has teased the Galaxy S25 Edge, which is anticipated to be the slimmest Galaxy model to date. Furthermore, rumors are suggesting that Samsung is developing a slimmer version of the Z Fold, specifically the upcoming Z Fold 7. The company may seek to utilize the advantages of silicon/carbon battery technology to create thinner devices while either maintaining or slightly increasing battery capacity. However, there are currently no reports or rumors to substantiate this claim.
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