With a peak current of 6,000 amps, this compact Avapow jump-starter is the most powerful model you’ll find on this list, and it can handle just about any vehicle on the road. That includes any gasoline engine, and even diesel engines of up to 12 liters, making it great for cars, trucks and motorcycles, as well as boats, ATVs and more. Plus, the intelligent jumper clamp has eight different protection systems in place so you don’t damage the starter or your battery. Be sure to clip the on-page coupon to get the additional $50 off.