Battery technology is developing rapidly and one of the most exciting developments in recent years is the rise of silicon-carbon batteries.
This allows phone makers to significantly increase battery capacity without making devices bulky.
Now Xiaomi looks set to lead this trend with a new flagship expected to feature a massive 7,500mAh battery in 2025.
Chris Martin / Foundry
This comes from a Chinese leaker Digital Chat Station, who revealed plans for a Redmi device with this hefty battery and indicated that Xiaomi is testing phones with even bigger power capacities.
To be clear, this won’t be from the Xiaomi 15 series that will be launched globally soon. Instead, it will likely be a Xiaomi 16 phone that will likely make its debut in China later this year.
While there are rugged phones with batteries over 10,000 mAh or even 20,000 mAh on the market, these devices tend to be bulky and designed for niche use.
What Xiaomi is reportedly working on is slim and lightweight phones that integrate silicon-carbon batteries. These offer more capacity while maintaining a slim profile, keeping the phones portable and easy to handle.
Chris Martin / Foundry
Moreover, Xiaomi has already started integrating silicon-carbon batteries into mid-range devices such as the Redmi Note 14 Pro 5G, signaling its commitment to bringing advanced battery technology to more users and paving the way for even greater capacities in flagship models.
Other Android manufacturers, such as Honor, Vivo and Oppo, have also used silicon-carbon batteries. Apple and Samsung have yet to follow suit, although they could do so on the rumored iPhone 17 Air and Galaxy S25 Slim.
However, Samsung is reportedly exploring the technology for future devices, so the Galaxy S26 series could be the first in the brand’s portfolio to feature these batteries.