leagend Introduces the World's First Supercapacitor Jump Starter for Hybrid Vehicles to the Automotive Aftermarket

leagend, a top automotive electronics brand with more than 20 years of industry experience, introduces the JS200H Supercapacitor Starting Assistant, a specialized solution designed for compatible hybrid vehicles, battery-electric vehicles (EVs), and range-extended electric vehicles (REEVs). By applying battery-free supercapacitor technology to the unique requirements of electrified vehicles, leagend aims to address a common but often overlooked challenge in the automotive aftermarket: insufficient power from the 12V auxiliary battery.

Addressing an Overlooked Challenge in Electrified Vehicles

As hybrid and electric vehicles become increasingly common, maintaining the reliability of their low-voltage electrical systems has become an important part of vehicle ownership and aftermarket service.

While drivers may focus on the high-voltage traction battery that powers the vehicle, the 12V auxiliary battery plays a separate and essential role. It supports low-voltage electronics and helps the vehicle complete the processes required to enter its normal ready-to-drive state. When the auxiliary battery cannot supply sufficient power, a compatible vehicle may fail to enter READY mode even when the main traction battery retains energy.

Traditional portable jump starters are generally designed to crank conventional engines through a 12V starter motor. However, compatible electrified vehicles without a conventional 12V starter motor require a different approach to low-voltage starting assistance.

The leagend JS200H has been developed specifically for this application. Rather than functioning as a conventional engine-cranking device, it provides short-term assistance to the compatible 12V auxiliary system, addressing a distinct need in the evolving automotive aftermarket.

Battery-Free Supercapacitor Technology for Onboard Readiness
At the heart of JS200H is its supercapacitor energy-storage system, which eliminates the need for a built-in chemical battery. The device uses five 3.0V, 360F supercapacitors connected in series and delivers a peak discharge current of 700A.

Unlike conventional portable jump starters that users must store, retrieve, and manually connect when an emergency occurs, JS200H is designed for permanent installation near the vehicle's 12V auxiliary battery. Following correct installation and an initial full charge, it manages its operation automatically according to vehicle conditions and available stored energy.

The system can replenish its stored energy through the vehicle's 12V power supply. When necessary, it also supports external charging through a compatible 5V/2A USB-C power source.

Designed to operate from −40°C to 80°C (−40°F to 176°F), JS200H is engineered for a wide range of climatic conditions, making it particularly relevant to drivers who encounter demanding winter temperatures or extreme summer heat.

More Than Emergency Starting Assistance
JS200H extends beyond emergency response by incorporating functions intended to support ongoing management of the 12V auxiliary electrical system.

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

Bluetooth connectivity enables users to access key information through the dedicated Smart App, including auxiliary battery voltage, JS200H voltage, stored energy level, operating status, and historical operating data.

When additional assistance is required, users can activate the forced-start function through the app or by pressing and holding the device's dedicated button for three seconds. The function provides approximately 10 seconds of emergency assistance, subject to the device's available energy and the vehicle's operating requirements.

Together, these features position JS200H as a permanently installed starting assistant with intelligent monitoring capabilities, rather than simply another portable emergency accessory.

Creating New Opportunities in the Automotive Aftermarket
The growth of electrified vehicles is reshaping demand for automotive tools, battery-management products, and specialized service equipment. For distributors, retailers, workshops, and automotive service providers, this transition creates opportunities to serve vehicle owners whose needs differ from those of conventional internal-combustion vehicle drivers.

With JS200H, leagend brings a dedicated solution to this emerging segment. Its combination of supercapacitor energy storage, automatic operation, Bluetooth monitoring, and permanent installation provides a differentiated product proposition for partners seeking to expand their electrified-vehicle aftermarket offerings.

The product also reflects a broader shift in automotive battery care: from responding to an emergency with a portable device toward maintaining an onboard solution designed to remain available when assistance is needed.

“JS200H brings battery-free supercapacitor technology to hybrid vehicle starting assistance, reflecting leagend's commitment to practical automotive innovation.” Andre Josh, sales and marketing specialist told the report.

Advancing Automotive Battery Technology
With more than 20 years of industry experience, leagend continues to develop solutions across automotive battery testing, monitoring, charging, and starting assistance. The JS200H extends this portfolio into a specialized application for compatible electrified vehicles, demonstrating the potential of supercapacitor technology beyond conventional portable jump starters.

As vehicle architectures continue to evolve, leagend aims to support automotive professionals and business partners with technologies designed around real-world vehicle requirements and emerging aftermarket opportunities.

JS200H is intended 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. Vehicle specifications should be confirmed before purchase, and professional installation is recommended.

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

Business Inquiries: marketing@leagend.com