Why smartphones with large batteries will be a trend in 2025
In 2025, manufacturers are finally breaking the trade-off between power and battery life: models with batteries over 6000 mAh are confidently entering the mainstream. Advanced silicon-carbon power cells made it possible to combine long-term operation without recharging with a thin body and fast charging.
Gizmochina writes about it.
How new silicon-carbon batteries are changing the game
"Battery anxiety" has long been a reality for gamers, content creators, and anyone who actively uses 5G, high-refresh-rate screens, and AI applications. The usual insurance in the form of fast charging can be inconvenient, so a large-capacity battery has ceased to be a niche feature and turned into an everyday necessity.
This week, Realme showed a concept smartphone with a 10,000 mAh battery in a case that is 8.5 mm thick and weighs 212 g. Achieving such an energy density — 887 Wh/l — was possible thanks to silicon anode technology and "Mini Diamond Architecture": a motherboard with a width of only 23.4 mm made room for the battery, and a triple cold-pressing process protects against swelling. The device supports 100 W charging.
The trend is wider than one brand. Xiaomi has already introduced silicon-carbon cells in the series, where the new Redmi Turbo 4 Pro carries 7550 mAh on board, which until recently seemed unattainable for a thin performance smartphone. Vivo, iQOO, Oppo, Infinix, and Realme are pulling up the capacity to 6500-7000 mAh even in flagships, and flexible "clave flips", which until 2023 barely exceeded 4000 mAh, now receive significantly larger batteries.
Apple and Samsung are still getting by with software optimizations and their own chips, maintaining more modest capacity indicators. But when competitors prove that 6000 mAh does not necessarily make a gadget a "brick", user expectations quickly change.
In conditions where it is already customary to render video or run local AI models on a smartphone, the main thing is the energy reserve. Silicon-carbon batteries have opened the way to thin and at the same time "long-lasting" devices, so in 2025, "more means better" really is.
As a reminder, in a world where wireless technologies have long become the norm, many users expect a complete rejection of cables and chargers. However, wireless charging is not always as convenient as advertised: in practice, it is often inferior to the traditional wired method in both speed and reliability.
We also wrote that Infinix presented an unusual concept of a smartphone with a back panel completely covered with solar panels at the MWC 2025 exhibition. In laboratory conditions, its power reached about 2 W. And although the idea looks promising — after all, even the best phones work autonomously for only a few days — no serial models with a similar solution have appeared among Android manufacturers yet.