The Weego 44s Lithium Jump Starter delivers 440 cranking amps in an ultra-compact design weighing less than 1 lb. No bigger than most cellphones, it can jump start boats, motorcycles, and almost all cars and trucks on the road today. Weego 44s is rated for 7L gas engines and 3.5L diesel engines. With the company's advanced voltage detection, Weego 44s can recognize a lead acid battery as low as 0.5V and can provide voltage support to raise and maintain the voltage of the vehicle’s battery to a level safe for jump starting. Additionally, Weego's patented Smarty Clamps prevent users from making a mistake, walking them through a successful jump start by lights and sounds.