The V4000 HD is a professional-grade jump starter built to handle the toughest jobs. Designed for both 12V and 24V systems, it brings drained batteries back to life in everything from passenger cars to heavy-duty trucks and buses. With up to 4,000A of peak current, a rugged 64,000mAh LiFePO₄ battery, and 7 layers of protection, the V4000 HD delivers dependable power wherever it's needed. Fleets, shops, and roadside pros trust the V4000 HD to start fast and stay ready.