Svolt Energy has unveiled an 80-kilowatt-hour battery pack for plug-in hybrid electric vehicles (PHEVs), which it says is the world’s largest-capacity pack for the segment, as the Chinese battery maker pushes into higher-energy hybrid applications.
The company introduced the Fortress 2.0 battery pack at its sixth Battery Day event in Changzhou, Jiangsu province, positioning the product for family car applications. Svolt said the pack’s highly integrated system design improves volume utilisation and system energy density by about 6%.
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The cells use ultra-fast charging graphite technology, enabling peak charging rates of up to 6C. Svolt said the pack can charge from 10% to 80% in around 10 minutes under suitable conditions.
Large-capacity hybrid batteries are drawing increased attention as automakers seek longer electric-only ranges. Leapmotor last year launched its D19 SUV with an 80.3-kWh battery in an extended-range electric vehicle (EREV) configuration, offering up to 500 kilometres of range. While both PHEVs and EREVs combine batteries and engines, EREV engines do not directly drive the wheels.
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Svolt also provided updates on its semi-solid-state battery development. The company said its first-generation high-nickel semi-solid-state battery has entered small-scale production, achieving an energy density of 270 Wh/kg and already being installed in a model from a European passenger vehicle brand.
A second-generation high-nickel semi-solid-state battery, designed mainly for low-altitude aircraft, has completed development, Svolt said. With an energy density of 342 Wh/kg, the battery has been installed and flight-tested in an electric vertical takeoff and landing (eVTOL) aircraft.
The company added that its mid-nickel semi-solid-state battery, targeting broader automotive markets, will enter mass production in October 2026. That battery, with an energy density of 245 Wh/kg, is intended for mid- to high-end passenger vehicles.
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In charging technology, Svolt unveiled what it calls its 3.5th-generation ion oscillation pulse charging system, which it said cuts charging time by about 25% compared with its second-generation technology without raising costs. The system has undergone more than 20,000 hours of testing and is expected to be deployed on several models based on a customer’s new platform in the third quarter of 2026.
Svolt reported its first quarterly profit in the fourth quarter of 2025 and is targeting full-year profitability in 2026. “We achieved our first quarterly profit in the fourth quarter of last year and aim to become profitable for the full year in 2026,” said Yang Hongxin, chairman and chief executive of Svolt Energy.
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The company expects battery shipments to reach 61 GWh in 2026, a 50% increase from 2025, Yang said.
Svolt originated as the battery division of Great Wall Motor, beginning power battery research and development in 2012 before being spun off in 2018. The company ranked eighth in China’s power battery installations in November, with 2.45 GWh and a 2.62% market share, according to the China Automotive Battery Innovation Alliance.
Source: CnEVPost