Rezervo Batteryless Jump Starter with Ultracapacitors - RZ-550 (500A)

Rezervo Batteryless Jump Starter - RZ-550 Designed for both the professionals and DIY users Simple and safe to use No batteries inside No need to wait hours to recharge Even starts vehicles without a battery Ideal for cold starts on engines 550A Starting current Maintenance Free For gasoline engines Built-in Reverse Polarity and Short Circuit Protection Built-in voltmeter No degradation in performance with subfreezing temperatures or age   Never get stuck again! With the Rezervo Batteryless Jump Starter, it will be ready anytime, anywhere you need it. Unlike traditional jump starters that require a charge before jumping your car, the Rezervo Batteryless Jump Starter only requires a quick charge from your weak battery to get your car started.   The REZERVO batteryless jump starter uses ultracapacitor technology. It is able to harness the power from your weak battery and boost it to start your car. With built-in intelligent circuitry designs, it also prevents you from making mistakes w