leagend Launches the World's First Supercapacitor Jump Starter for Hybrid Vehicles in the Automotive Aftermarket

leagend introduces the World's First Supercap Jump Starter designed for hybrid vehicles, advancing intelligent starting assistance in automotive aftermarket.

LOS ANGELES, CA, UNITED STATES, October 26, 2026 /EINPresswire.com/ -- leagend, a top automotive electronics manufacturer with more than 20 years of industry experience, announces the launch of the leagend JS200H, a supercapacitor starting assistant developed specifically for compatible hybrid vehicles, battery-electric vehicles (EVs), and range-extended electric vehicles (REEVs). By addressing a critical but often overlooked challenge in electrified vehicles—the failure of the 12V auxiliary battery—JS200H introduces a new approach to vehicle starting assistance that combines battery-free energy storage, intelligent operation, and long-term onboard readiness.

Unlike conventional portable jump starters designed primarily for vehicles with traditional starter motors, leagend JS200H is engineered for compatible electrified vehicles that rely on a 12V lead-acid auxiliary battery but do not have a conventional 12V starter motor. This targeted application addresses a distinct vehicle recovery challenge and expands the possibilities for supercapacitor technology in the evolving automotive market.

Addressing a Critical Challenge in Hybrid and Electric Vehicles
Many drivers assume that a hybrid or electric vehicle should remain ready to drive as long as its high-voltage traction battery has sufficient energy. However, the 12V auxiliary battery serves a different purpose: it powers low-voltage electronics and supports the vehicle systems required to enter its normal ready-to-drive state.

When the 12V auxiliary battery becomes too weak, a vehicle may fail to enter READY mode even when its main traction battery still has substantial charge. This can leave drivers facing an unexpected interruption that cannot be resolved simply by charging the main battery.
The leagend JS200H is designed to provide short-term starting assistance to the compatible 12V auxiliary system, helping address this specific problem. Rather than relying on a conventional built-in lithium battery, it uses supercapacitors to store energy and deliver assistance when required.
By focusing on the distinct electrical architecture of compatible electrified vehicles, leagend JS200H offers a purpose-built solution for a growing segment of the automotive aftermarket.

Battery-Free Supercapacitor Technology for Long-Term Readiness
At the core of leagend JS200H is its supercapacitor energy-storage system, which eliminates the need for a built-in chemical battery. This design differentiates the device from traditional portable jump starters that depend on rechargeable lithium batteries and require users to monitor their charge levels and prepare them for emergencies.

leagend JS200H features five supercapacitors rated at 3.0V and 360F each, connected in series, with a peak discharge current of 700A. Once professionally installed and initially charged, the device manages its operation according to vehicle conditions and available stored energy.
Its permanent-installation design reduces the need to store, retrieve, and manually connect a separate emergency starting device. Energy can be replenished through the vehicle's 12V power supply or, when necessary, through a compatible 5V/2A USB-C power source.

Designed for an operating temperature range of −40°C to 80°C (−40°F to 176°F), leagend JS200H is engineered to support a wide variety of climates, including demanding cold-weather and high-temperature environments.

Intelligent Assistance and Smart App Monitoring
Beyond emergency starting assistance, leagend JS200H incorporates intelligent operation and Bluetooth connectivity to give users greater visibility into the condition of the device and the vehicle's auxiliary electrical system.
Through the dedicated Smart App, users can monitor the 12V auxiliary battery voltage, leagend JS200H voltage and stored energy level, device operating status, and historical operating data. The app also supports activation of the forced-start function.

For situations requiring manual intervention, users can activate approximately 10 seconds of emergency assistance through the app or by pressing and holding the device's forced-start button for three seconds. This function provides an additional option when the vehicle cannot enter its normal ready-to-drive state, subject to the device's available energy and the vehicle's operating requirements.

During normal vehicle operation, the supercapacitors can also absorb and release energy over short periods to help buffer certain voltage fluctuations in the 12V electrical system. By participating in short-term power delivery, leagend JS200H may help reduce some instantaneous demands on the auxiliary battery and potentially extend its replacement interval under suitable conditions.

Designed for the Future of Automotive Battery Care
As hybrid and electric vehicles become increasingly common, the automotive aftermarket faces new demands for specialized diagnostic, maintenance, and recovery solutions. Although these vehicles differ from conventional internal-combustion vehicles in their propulsion systems, their low-voltage electrical systems remain essential to reliable operation.

The leagend JS200H reflects leagend's approach to this changing market: applying supercapacitor technology to a specific vehicle challenge while integrating intelligent monitoring and convenient onboard operation.
For automotive distributors, workshops, and service providers, the product represents an opportunity to address a distinct customer need within the expanding electrified-vehicle segment. Its dedicated application also highlights the importance of selecting starting-assistance equipment according to a vehicle's actual electrical architecture rather than assuming that one solution fits every vehicle.

leagend JS200H is designed only for vehicles equipped with a 12V lead-acid auxiliary battery and without a conventional 12V starter motor. Not all hybrid or electric vehicles are compatible. Vehicles using 12V lithium auxiliary batteries, 16V or 24V systems, or conventional 12V starter motors fall outside its stated application. Vehicle compatibility should be confirmed before purchase and installation, and professional installation by someone experienced in automotive electrical systems is recommended.

Advancing leagend's Automotive Technology Portfolio
With leagend JS200H, leagend continues to expand its automotive electronics portfolio with a solution tailored to the changing needs of modern vehicles. Combining battery-free supercapacitor energy storage, intelligent starting assistance, Bluetooth monitoring, and permanent installation, the product demonstrates how established automotive battery technologies can be adapted to emerging vehicle architectures.
As the automotive industry continues its transition toward electrification, leagend aims to develop practical technologies that help drivers and automotive professionals manage vehicle battery challenges with greater confidence and convenience.

Learn more about leagend JS200H here.

About leagend
leagend is top automotive electronics brand specializing in battery testers, battery monitors, battery chargers, OBD II diagnostic tools, and supercapacitor jump starters. With more than 20 years of industry experience, the company focuses on product development, research and development, and innovative automotive battery solutions for global customers and business partners.

Business Inquiries: marketing@leagend.com

Arthur Kingsly
Shenzhen leagend Optoelectronics Co., Ltd.
+ +86 755-8282 1859
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