Samsung’s foray into 6,000mAh battery technology may start with the Galaxy S26 series

Samsung is considering ways to improve the batteries of its flagship Galaxy S handsets, albeit cautiously.

According to The Financial News, a South Korean financial newspaper, Samsung is exploring using silicon-carbon batteries in the next generation of flagship Galaxy S smartphones.

If you’re familiar with flagship or premium Chinese Android phones, you’ll also know that some of these devices have switched from lithium-ion to silicon-carbon batteries in the last few years. One of the first we’ve come across is the Honor Magic5 Pro launched in 2023, which Honor once said could grant 12.8% more energy density when using the same battery real estate.

While such batteries are still inherently lithium-ion, changing the anode from graphite to silicon-carbon presents both a perk and a flaw.

These newer batteries can hold larger stores of energy, but they can also negatively impact the cycle life (the number of times you can charge and use a battery until it’s no longer effective).

The report claims that such a change in battery type can increase the capacity of the Galaxy S26 series phones to 6,000mAh or 7,000mAh per device. For comparison, the lithium-ion Galaxy S25 series currently has 4,900mAh (Galaxy S25 and Galaxy S25+) and 5,000mAh (Galaxy S25 Ultra).

Samsung researchers exploring silicon-carbon batteries know the trade-offs, hence their cautious approach. The Financial News quoted a Samsung Electronics spokesperson (in Korean) as saying that the company is still finding ways to improve the lifespan of silicon-carbon batteries. Hence, nothing has been certain in this space for Galaxy S handsets.

Source: The Financial News (Korean)

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