Solid State Batteries in Phones: Which Brands Have Them in 2026?

smartphones

In 2026, the smartphone industry is undergoing a pivotal transition. While "all-solid-state" batteries (ASSBs) are primarily making their debut in electric vehicles and wearables, the mobile market has embraced semi-solid-state technology as the new flagship standard.

These batteries replace a portion of the liquid electrolyte with solid components, offering higher energy density and improved safety without the massive manufacturing costs of pure solid-state cells.

Leading Brands in 2026

                                 

1. Vivo (The Early Adopter)

Vivo has taken the lead by integrating semi-solid-state batteries into its high-end X-series.

  • Models: Vivo X200 Pro and X200.

  • Key Feature: These devices feature "Blue Ocean" battery tech with capacities reaching 6,000mAh while maintaining a slim profile. They are specifically marketed for their "Extreme Cold Resistance," capable of operating efficiently at temperatures as low as -20°C.

                          

2. Xiaomi

Xiaomi continues to push the boundaries of density. After unveiling 1000Wh/L lab prototypes in previous years, they have moved into commercial application.

  • Models: Xiaomi 17 Ultra / 17 Max.

  • Key Feature: Utilizing silicon-carbon anodes and semi-solid electrolytes, Xiaomi is achieving capacities up to 8,000mAh in its 2026 "Max" variants, significantly outperforming traditional lithium-ion competitors.

                                   

3. Samsung

Samsung’s strategy for 2026 is focused on a dual-track approach via Samsung SDI.

  • Models: Galaxy S26 Ultra (Selected Regions/Special Editions).

  • Status: While Samsung is mass-producing all-solid-state samples for wearables like the Galaxy Ring, the S26 series utilizes advanced semi-solid tech to ensure safety and longevity for its "Galaxy AI" features.

                                   

4. Oppo & OnePlus

Both brands are leveraging "Glacier Battery" technology, which utilizes a semi-solid state to pack higher capacities (up to 6,100mAh) into standard-sized flagship frames.

Why the Switch in 2026?

The shift is driven by three primary advantages:

  1. Safety: Solid electrolytes are non-flammable, virtually eliminating the risk of "battery swell" or fires.

  2. Density: Phones can now hold 20-30% more power in the same physical space.

  3. Longevity: These batteries degrade much slower, often rated for over 2,000 charge cycles before hitting 80% health.


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