Svolt said it is the largest-capacity battery for PHEV models to date.
The battery supports 6C fast charging and delivers an all-electric range of more than 400 km.
(Image credit: Svolt Energy)
Chinese battery maker Svolt Energy has started mass production of a high-capacity battery for plug-in hybrid electric vehicle (PHEV) models, dubbed Fortress 2.0.
The 80-kWh battery has rolled off the production line at Svolt’s plant in Changzhou, Jiangsu province, making it the largest PHEV battery in the Chinese market, according to a company statement Thursday.
The capacity of the Fortress 2.0 battery represents a 35.6% increase from the previous generation’s 59-kWh system, and is primarily targeted at large family vehicles and off-road scenarios, the company said.
The battery system features a highly integrated engineering design, achieving a 6% increase in both overall volumetric utilization and energy density compared to its predecessor.
D-class plug-in hybrid models equipped with the battery are expected to have an all-electric range exceeding 400 kilometers, significantly reducing charging frequency for users, according to Svolt.
In addition, the battery supports peak 6C fast-charging technology, capable of replenishing enough power for over 400 kilometers of all-electric driving in just 10 minutes, the company said.
For thermal safety management, the battery pack applies nano-thermal ceramic insulation materials for the first time, designed to ensure it does not catch fire for 30 minutes under high temperatures of 1,000 degrees Celsius.
Svolt said the high-capacity PHEV battery will soon debut on a new PHEV model, which is scheduled to be unveiled at the Beijing Auto Show opening later this month.
Battery capacities for hybrid models in China have been growing larger over the past few years, as consumers seek to eliminate range anxiety while maximizing lower-cost pure-electric driving.
Leapmotor debuted the D19 sport utility vehicle (SUV) in October 2025, with its extended-range electric vehicle (EREV) variant featuring an 80.3-kWh battery pack from CATL, the largest on an EREV to date.
The D19 will officially go on sale later today, with the EREV version of the model offering an all-electric range of up to 500 kilometers.
Svolt, a battery maker spun off from Great Wall Motor, accounted for a 1.84% share of China’s overall power battery installations in March, according to data from the China Automotive Battery Innovation Alliance (CABIA).
Svolt’s chairman said that Donut Lab’s claimed battery parameters are contradictory, and such a battery simply doesn’t exist in the world.
