Samsung tends to play it safe when it comes to major upgrades for its Galaxy S series. This conservative approach appears to extend to the upcoming Galaxy S25 lineup, with a recent leak revealing no significant changes in battery size for the Plus model.
According to the reliable source GalaxyClub, the Galaxy S25 Plus will pack the same battery as its predecessor, the S24 Plus. This translates to a rated capacity of 4,755mAh, with Samsung likely marketing it as a 4,900mAh battery (similar to the S24 Plus).
Leaks also suggest the base S25 and the top-tier S25 Ultra will retain their respective 4,000mAh and 5,000mAh batteries from the S24 generation.

While a stagnant battery size isn’t ideal news, it’s important to remember that capacity alone doesn’t dictate battery life. Other factors like the power efficiency of the chipset and the display technology play a crucial role. And here’s where things get a bit more interesting.
The rumored 3nm chipset powering the S25 series could potentially deliver improvements in efficiency compared to the 4nm chips in the S24 lineup. This, in turn, could translate to better battery life despite the unchanged capacities.
That said, the lack of a battery bump could put the S25 series at a slight disadvantage compared to some competitors. Phones like the OnePlus 12, Vivo X100 Pro, Asus Rog Phone 8, and Honor Magic 6 Pro all boast batteries exceeding 5,400mAh.
The competition is only getting fiercer, with rumors swirling about the next OnePlus flagship potentially sporting a monstrous 6,000mAh battery.
Ultimately, whether the S25 series can compete in the battery life department remains to be seen. We’ll have to wait for official specs and real-world testing to get a clearer picture. But from what we know so far, if you prioritize a phone with the absolute biggest battery, the S25 series might not be the best choice in 2025.







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