The website says $ 45 but I was in my local store yesterday and the shelf is tagged $ 35.

Enjoy greater peace of mind when you’re on the go with the Stanley Simple Start Lithium-Ion Battery Booster. This item is an innovative way to give a dead battery new life from the comfort of your vehicle. It works in just minutes so you don’t have to rely on helpful strangers to give you a jump. When your battery is dead, just plug this Stanley Simple Start battery booster into the 12-volt DC outlet, or clamp it to the battery. The unit will start charging immediately and get you back on the road quickly. The "Ready, Set, Go" multi-colored LED indicator lets you know when the battery is fully charged and when the vehicle is ready to start. It also provides portable power with a two-amp USB port, which can charge smartphones, tablets and more. A built-in LED light makes this item easier to use in low-light conditions and at night.