The Noco Genius BoostPlus Compact Lithium-Ion Jump Starter is an ultra-safe, mistake-proof jump starter. The 1000 Amp unit features spark-proof technology and reverse polarity protection so you can safely connect it to almost any battery. Designed for use with gas engines up to 6 liters and diesel engines up to 3 liters, making it ideal for cars, boats, riding lawn mowers and more. It even charges your cell phones, tablets or computers and is a working LED flashlight. We all need one of these, I have one in my trunk!