Svolt Energy, a battery supplier affiliated with Great Wall Motor, has introduced its 3.5-generation ion oscillation pulse charging technology, which cuts full charging time by 25 percent without raising battery system costs. The company announced the development at its sixth Battery Day event in China on January 13, 2026, and said the technology will enter mass production in the third quarter of 2026.
Rather than altering battery chemistry or cell structure, the new charging scheme represents an upgrade to Svolt’s existing methodology. It is designed for integration into automakers’ next-generation vehicle platforms slated for launch in 2026.
Charging protocols have evolved from basic constant-current, constant-voltage approaches to step charging, multi-factor integrated charging and terminal pulse charging. The 3.5-generation system refines current control and charge sequencing through intelligent adjustments and intermittent relaxation phases. This process encourages lithium ions to oscillate and redistribute more uniformly, improving intercalation into the anode material and enabling faster, more even charging.
Compared with Svolt’s second-generation charging technology, the updated system reduces full charging duration by about a quarter, while maintaining existing manufacturing and system cost levels. The company says the technology has undergone more than 20,000 hours of cumulative testing focused on performance stability and operational consistency, though it has not disclosed vehicle-level charging power figures.
Beginning in the third quarter of 2026, the 3.5-generation charging technology will be installed on multiple mass-production models built on customers’ new-vehicle architectures. Svolt has not revealed the names of partner automakers, vehicle segments or battery capacities involved.
In parallel with the charging innovation, Svolt is preparing to start volume production of its first-generation semi-solid-state batteries—known as liquid-solid-state batteries—with an energy density of around 270 Wh/kg. These cells have seen small-batch deployment in European passenger vehicles. The company also unveiled a medium-nickel semi-solid-state battery featuring a solid-electrolyte transfer process that cuts thermal runaway risk by 25 percent and offers 245 Wh/kg. Volume production for mid- to high-end electric vehicles is scheduled for October 2026. Additionally, a second-generation high-nickel semi-solid-state battery, delivering 342 Wh/kg, is being evaluated for electric vertical takeoff and landing aircraft.
Svolt’s Stacked 4.0 battery architecture, which doubles the sheet count to 16 for simultaneous stacking, promises a 100 percent efficiency gain, single-line output exceeding 1 GWh and a 34 percent reduction in per-watt-hour cost. Design work concluded in late 2025, with volume production set for the second quarter of 2026.
Founded in 2018 after a spin-off from Great Wall Motor, Svolt Energy focuses on lithium-ion cells, modules, battery packs and energy storage systems.
Source: CarNewsChina
