Samsung’s Galaxy S Ultra lineup is known for its annual updates that include improvements in camera quality, display brightness, and processor power. However, one crucial aspect that seems to be overlooked time and time again is the battery capacity.
For the past few years, Samsung has stuck with a 5000mAh lithium-ion battery for its Galaxy S Ultra devices, starting with the Galaxy S20 Ultra in 2020. Despite advancements in battery technology, there have been no significant upgrades in sight. Reports suggest that the upcoming Galaxy S26 Ultra, set to be unveiled on 25 February, will likely continue this trend with a minor increase to around 5,400mAh, falling short of the competition.
While Samsung remains stagnant in its battery capacity, other smartphone manufacturers like OnePlus and Oppo have made significant strides in this area. The OnePlus 15 boasts a massive 7,300mAh battery, while the Oppo Find X9 Pro houses an impressive 7,500mAh battery. These brands have embraced newer battery technologies, such as silicon-carbon cells, which offer greater power efficiency without compromising on size.
The key to these larger-capacity batteries lies in the chemistry of the cells. Unlike Samsung, which relies on traditional lithium-ion batteries, OnePlus and Oppo have integrated silicon-carbon batteries into their devices. By incorporating silicon into the anode material, these batteries can store more power within the same form factor, leading to longer battery life and faster charging speeds.
While Samsung may have concerns about the potential drawbacks of silicon expansion during charging, the benefits of silicon-carbon batteries outweigh these risks. With consumers increasingly prioritizing battery life as a key feature in smartphones, Samsung’s resistance to adopting newer battery technologies could leave them at a significant disadvantage in the market.
In a rapidly evolving landscape where competition drives innovation, Samsung may eventually be compelled to embrace silicon-carbon batteries to stay competitive. Until then, consumers may have to settle for incremental improvements in battery capacity with each new Galaxy S Ultra release.
In conclusion, while Samsung continues to focus on incremental updates in other areas of its flagship devices, the lack of significant battery upgrades could impact the overall user experience. As smartphones become essential tools for daily tasks, a longer-lasting battery becomes a crucial feature for consumers. It remains to be seen whether Samsung will pivot towards adopting newer battery technologies in future iterations of its devices to meet the growing demands of the market.

