I just had to say I love modern tech. I recently got at Walmart a lithium battery jumpstarter. For the low price they are now, I have now bought one for each of my vehicles. I have since I was driving a good heavy duty set of jumper cables, but then you are always at the mercy of another driver or being able to get another vehicle to where you need to be jumped. With this battery pack I can jump my car from a battery brick small enough to fit inside my jacket pocket. And when the winter weather that kills my battery in the morning is done with, it also has a flashlight and a 2 amp USB charging port on it. I can’t believe how long it took me to get one. I strongly recommend one of them for everyone who has a car. I have jumped myself a couple of times already with it, and a few coworkers who have batteries that could not handle the cold.