The 9,000mAh Giant Battery Is Ready To Launch, But The Phone Is Still Thin And Light

OPPO, testing carbon silicon batteries (photo: dock. oppo)

JAKARTA - Smartphone battery technology continues to progress significantly, especially with the presence of silicon-carbon batteries that are able to deliver large capacities without increasing the thickness of the device. In 2026 it is estimated that it will become a single cell battery era with a capacity of 9,000mAh, without making the phone a 'brick' or thick and heavy.

Silicon-carbon batteries themselves have become an important step forward in smartphone battery technology. Currently, many Chinese smartphone manufacturers such as OPPO, Xiaomi, OnePlus, and HONOR have adopted this technology to deliver batteries with a capacity of 6,000mAh to 7,000mAh in a thin design. However, giant manufacturers such as Samsung, Apple, and Google are still exceptions that have not widely used these types of batteries.

Silicon-carbon battery technology allows for an increase in energy capacity inside batteries of almost the same thickness as ordinary lithium-ion batteries. Currently, this type of battery contains about 10% silicon, which is the main factor in capacity building without compromising the phone's thin design.

The latest news came from a well-known leaker, Digital Chat Station, who revealed that OPPO has tested a 15% silicon-contained battery and a capacity of 8,000mAh for about six months. In addition, OPPO and HONOR are also developing a battery with a higher silicon content, which is between 25 and 30 percent.

This development indicates that next-generation smartphones are likely to use silicon-carbon batteries with about 20% silicon content, so battery capacities could rise even further without significantly increasing the battery's physical size.

It is estimated that next year, the single cell battery capacity will reach around 8,500mAh. Meanwhile, preliminary research for the 9,000mAh battery is ongoing. However, it will take about 6 to 12 months to ensure that such a battery with such a capacity is safe and reliable, so we will likely only see this type of battery in the second half of 2026 or after.

In addition to silicon-carbon batteries, there is also another new battery technology known as a metal-shell battery. This technology offers better volume efficiency, thereby increasing battery capacity in the same space. Metal-shell battery is predicted to be used by several smartphone manufacturers starting next year.

With the advancement of this technology, smartphone users in the future will be able to enjoy much longer battery life without having to sacrifice a slim and lightweight device design. This is certainly good news for users who want a large battery phone but are still comfortable to carry and use on a daily basis.