Rezervo Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and other Gas Engines (RZ-300mini (300A)) Description Features: HARNESSES the power of your own battery's weakest charge and boosts it to start your car EASY TO USE design for professionals and DIY; MAINTENANCE FREE with years of shelf life INSTANT RECHARGING means no need to wait hours to recharge like traditional jump starters with internal batteries EXTREME WEATHER operating from -30F to 140F (-34C to 54C); capable for jump starting in any weather conditions Product Details: Brand: REZERVO Amperage: 300 Amps Peak Output Current: 300 Amps Manufacturer: ‎REZERVO Brand: ‎REZERVO Item Weight: ‎1.9 pounds Product Dimensions: ‎6.5 x 4 x 1.8 inches Item model number: ‎RZ-300mini Is Discontinued By Manufacturer: ‎No Manufacturer Part Number: ‎RZ-300mini Amperage: ‎300 Amps Date First Available: March 22, 2017