AKASOL
AKASOL is a German developer and manufacturer of high-voltage lithium-ion battery systems for electric buses, commercial vehicles, off-highway vehicles and industrial applications.
Last updated August 26, 2026
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Overview
AKASOL is a German battery-technology brand originating in Darmstadt and specializing in high-voltage lithium-ion battery systems for professional electric mobility. Its principal customers are vehicle manufacturers, fleet operators and industrial-equipment companies rather than individual consumers. The company’s systems are intended for demanding applications in which energy capacity, continuous power, charging behavior, thermal control, durability, functional safety and packaging must be integrated into a complete vehicle architecture. The company’s roots reach back to a solar-technology student team established in 1989 at the Department of Electrical Engineering and Information Technology of Darmstadt University of Technology. The team developed solar- and battery-powered cars with an emphasis on low energy consumption. In 2008, members of that group established Akasol Engineering GmbH as a commercial company focused on lithium-ion batteries and an everyday-use electric car. The company changed its name to Akasol GmbH in 2012 and subsequently developed into a specialist supplier of battery systems for electric commercial vehicles and other professional platforms. AKASOL’s business model has centered on supplying integrated battery systems rather than loose cells. Its offerings combine battery modules with electrical connections, control electronics, battery-management functions, thermal-management provisions and application engineering. Product platforms can be adapted to different vehicle sizes, duty cycles and installation requirements. This approach is particularly relevant to electric buses and commercial vehicles, where battery packaging, high daily utilization and predictable fleet operation place different demands on the system than passenger-car applications. The company became a publicly traded entity in June 2018 through the listing of Akasol AG. It expanded its manufacturing footprint beyond Germany when a production site in Detroit opened in 2019, supporting access to North American commercial-vehicle and industrial markets. In August 2021, AKASOL brought its Darmstadt Gigafactory 1 into operation. The 15,000-square-metre facility was planned to provide initial annual capacity of up to 1 GWh, with a further expansion target reported for 2022. BorgWarner, the US automotive supplier, began taking a majority stake in AKASOL in 2021 and completed the acquisition in September of that year. The transaction ended AKASOL’s role as an independent listed company and placed its technologies, manufacturing assets and customer programs within BorgWarner’s electrification activities. AKASOL therefore remains an active operating brand and technology platform, although it is no longer an independently listed corporation. Its market identity continues to be associated with vehicle-grade battery systems for buses, commercial vehicles, off-highway equipment and related industrial uses.
History
AKASOL’s origins lie in a solar-technology student initiative formed in 1989 at Darmstadt University of Technology’s Department of Electrical Engineering and Information Technology. The group built solar-powered and battery-powered cars and pursued low-energy vehicle concepts. This early work established a technical connection between renewable energy, electric propulsion and rechargeable energy storage that later influenced the company’s commercial direction. In 2008, members of the team founded Akasol Engineering GmbH. The for-profit company initially pursued lithium-ion battery development and an electric car intended for everyday use. As market opportunities in electric mobility evolved, the business increasingly concentrated on complete battery systems for professional vehicles and equipment, where customers required engineering support and integration into larger vehicle platforms. The company adopted the shorter name Akasol GmbH in 2012. AKASOL subsequently developed into a specialist manufacturer of high-voltage battery systems. Its target applications included electric buses, commercial vehicles, off-highway vehicles and industrial equipment. Rather than positioning itself as a consumer battery company, it supplied vehicle manufacturers and other business customers with modular systems incorporating battery modules, electrical interfaces, control electronics, battery-management functions and thermal-management provisions. The combination of standardized platforms and application-specific engineering enabled the systems to be adapted to different vehicle architectures and operating conditions. In June 2018, the company went public as Akasol AG. The listing provided an independent corporate and financing structure while the company continued expanding its battery-system activities. In 2019, AKASOL opened a manufacturing site in Detroit, extending its industrial footprint into North America and creating a regional base for customers in that market. The company expanded its German production capacity with Gigafactory 1 in Darmstadt. The 15,000-square-metre facility began operating in August 2021. Its first stage was described as having production capacity of up to 1 GWh annually, with a planned increase to 2.5 GWh by 2022. The facility was intended to support the growing demand for battery systems in electric buses and commercial vehicles. BorgWarner, an American automotive supplier, took a majority stake in AKASOL beginning in June 2021 and completed the acquisition in September 2021. Following the transaction, AKASOL ceased to operate as an independent listed company. Its battery technologies, production capabilities and customer activities became part of BorgWarner’s broader electrification portfolio. The AKASOL name and operating capabilities remain associated with high-voltage battery systems for commercial and industrial electric mobility, while corporate ownership and strategic control rest with BorgWarner.
- 2021
Darmstadt Gigafactory 1 begins operation
[1]The company began operating a 15,000-square-metre production facility in Darmstadt, initially planned for up to 1 GWh of annual capacity.
- 2021
BorgWarner acquisition completed
[2]BorgWarner completed the acquisition of AKASOL, integrating its battery activities into BorgWarner’s electrification business.
- 2019
Detroit manufacturing site opens
[1]AKASOL opened a manufacturing site in Detroit to extend its production and customer support presence in North America.
- 2018
Akasol AG goes public
[1]The company completed its public listing as Akasol AG, becoming an independently listed battery-system specialist.
- 2012
Company renamed Akasol GmbH
[1]The business adopted the shorter Akasol GmbH name as it continued developing rechargeable battery technology and electric-mobility applications.
- 2008
Akasol Engineering GmbH founded
[1]Members of the Darmstadt student team established a commercial company to develop lithium-ion batteries and an electric car for everyday use.
- 1989
Solar-technology team established
[1]A student team at Darmstadt University of Technology began developing solar- and battery-powered cars focused on low energy consumption, providing the technical roots of the later company.
Products and positioning
A business-to-business supplier of modular, high-voltage battery systems for electric commercial vehicles, buses, off-highway equipment and industrial applications.
High-voltage lithium-ion battery systems
AKASystem
AKASystem is the brand’s modular high-voltage battery-system family for commercial vehicles, electric buses and industrial or off-highway platforms. A system typically brings together battery modules, high-voltage connections, control electronics, battery-management functionality and provisions for thermal management. The architecture is designed for integration by vehicle and equipment manufacturers, with configuration adapted to available packaging, energy requirements, duty cycle, charging strategy and safety targets. It represents AKASOL’s central business-to-business offering rather than a consumer replacement-battery product.
Brand decisions
2021
BorgWarner acquires AKASOLM&ABackground
BorgWarner sought to expand its electrification capabilities, particularly in high-voltage battery systems for commercial vehicles and other professional applications.
Action taken
BorgWarner took a majority stake in AKASOL during 2021 and completed the acquisition in September, placing the German company’s technology and operations within BorgWarner’s electrification business.
Aftermath
AKASOL stopped operating as an independent listed company. Its battery-system capabilities, manufacturing assets and customer programs became part of BorgWarner’s broader portfolio.
2021
Scale Darmstadt battery manufacturingStrategyBackground
Demand for electric-bus and commercial-vehicle battery systems required greater industrial production capacity in Germany.
Action taken
AKASOL started operations at the 15,000-square-metre Gigafactory 1 in Darmstadt, with first-stage annual capacity described as up to 1 GWh and a planned increase to 2.5 GWh by 2022.
Aftermath
The facility strengthened the company’s ability to produce integrated battery systems at industrial scale before the business was incorporated into BorgWarner.
Recent events
Reported
BorgWarner completes acquisition of majority stake in AKASOL[4]
BorgWarner completed its tender offer for AKASOL shares and owned 89.08% of AKASOL's outstanding shares following completion.
Reported
BorgWarner announces acquisition of Akasol[5]
BorgWarner announced an acquisition of Akasol, with a wholly owned subsidiary launching a voluntary public takeover offer for all outstanding shares at €120 per share. Holders of approximately 59% of Akasol’s outstanding shares had committed to accept the offer.
Sources6 sources
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