leagend’s JS300 PRO jump starter series hits Kickstarter goal

leagend says its JS300 PRO and JS300 PRO-D battery-free SuperCap jump starters reached their Kickstarter funding goal on Oct. 13, 2026, signaling demand for a permanently installed alternative to traditional portable jump starters. The campaign centers on vehicle starting assistance, battery monitoring and extreme-weather performance.

Why it matters: - leagend is positioning JS300 PRO and JS300 PRO-D as a shift away from emergency-only portable jump starters toward a permanently installed vehicle system. - The series pairs starting assistance with battery monitoring, which could help drivers spot problems before a no-start situation. - The Kickstarter win suggests interest in battery-free SuperCap-based starting tools.

What happened: - leagend announced that the JS300 PRO and JS300 PRO-D Kickstarter campaign reached its funding goal. - The company made the announcement on Oct. 13, 2026, from Detroit. - The campaign is titled “leagend JS300 PRO: One System. Two Ways to Start.” - The campaign remains open to additional supporters on Kickstarter.

The details: - JS300 PRO and JS300 PRO-D use battery-free SuperCap technology instead of a built-in rechargeable chemical battery. - The system is designed to stay connected to the vehicle battery as a permanently installed starting-assistance unit. - leagend says the products are engineered to operate from −40°C to 80°C. - The company says the design is meant to support cold winter starts, hot weather use, long parking periods and frequent short trips. - The leagend smart app shows State of Charge, State of Health, Cold Cranking Amps, battery voltage, temperature information and starting-performance data. - Self-Learning Mode is designed to adapt the system based on real vehicle starting behavior. - Drive Mode is designed to support integrated operation while the vehicle is in use. - JS300 PRO gives drivers app-based access to battery and starting-system information. - JS300 PRO-D adds a solar-assisted onboard display for battery and SuperCap status inside the vehicle.

Between the lines: - The campaign language shows leagend is trying to reframe jump starters as part of routine vehicle management, not just roadside emergency gear. - The focus on monitoring and permanent installation suggests the product pitch is aimed at drivers who want more visibility into battery health and less maintenance hassle. - The SuperCap approach sets the series apart from lithium-based portable jump starters, even though the practical appeal still depends on how well the installed system fits real-world use.

What’s next: - leagend says the Kickstarter campaign continues to accept backing. - The company is using the funding milestone to push the JS300 PRO series as a next-generation vehicle starting solution. - More information is available in the company’s announcement here.