Chinese battery manufacturer SVOLT Energy is preparing to take concrete steps in the field of semi-solid-state batteries. The company announced that it will begin trial production of its first-generation semi-solid-state batteries with a capacity of 140 Ah in the last quarter of 2025. It was announced that these batteries will be supplied to BMW’s MINI brand. The target date for mass production is 2027.

SVOLT is working on a semi-solid-state battery

Semi-solid-state batteries are defined as a technology between traditional lithium-ion batteries with liquid electrolytes and fully solid-state batteries, which have not yet reached the commercialization stage. These batteries feature a hybrid blend of liquid and solid electrolyte materials. The aim is to offer higher energy density, longer lifespan, and higher safety levels compared to current batteries.

SVOLT announced that it will conduct trial production on its existing mass production line. Company President Yang Hongxin stated that the first-generation semi-solid batteries will have an energy density of 300 Wh/kg. Production is planned to be low-cost. The second-generation versions, currently under development, aim to increase energy density to 360 Wh/kg.

In addition to SVOLT’s semi-solid-state technology, its full-solid-state battery program is also underway. The first-generation batteries developed under this program target an energy density of 400 Wh/kg. The company plans to use these high-density batteries in low-altitude aircraft and the automotive sector.

Shortly before this announcement, SVOLT began production of its second-generation Dragon Armor batteries at its Huzhou facility in Zhejiang Province. With a capacity of 65 kWh, this battery is specifically designed for range-extending electric vehicles.

The company states that this battery is the largest mass-produced battery in its segment. Supporting 5C fast charging, the battery can reach a charge from 20% to 80% in just 12 minutes. SVOLT’s steps demonstrate the rapid transformation in battery technologies and the current state of global competition in this field.