Weego 44s is the most reliable, easy to use portable jump starter for cars, boats, motorcycles, trucks, ATVs, and more. No matter your level of vehicle experience, anyone can use the Weego! The Weego 44s battery jump pack contains massive power in a compact design; weighing less than 1 pound, the Weego 44 provides 2100 peak amps / 440 cranking amps to start dead batteries on the go and is rated for 7 liter gas engines and 3.5 liter diesel engines. Weego's patented Smarty Clamps are built to last and feature a 30" cable span, tapered tip, 1.5" wide clamp jaw, and reversible hinge so users with limited strength or mobility can easily jump their own vehicle. The Weego 44s clamps contain safety features like anti-spark, connection detection, reverse polarity, power surge, and more. Weego's car jumper features a bypass button that provides an extra boost to jump start batteries with 0 voltage. Weego 44s battery jump box holds a charge for up to 1 year and recharges in just 2.5 hours with the included USB-charging cord. We recommend charging the Weego 44s lithium jump starter every 6 months to ensure device is fully charged and ready for when you need it most. Weego 44s operating temperature is -4°F to 114°F - making it the ideal jump starter for all climates. In addition to our 2-year manufacturer assurance, Weego offers lifetime customer support; if something goes wrong, contact us and we'll make it right!