Best I've ever seen. Developed an electrical short that has been drawing down my battery. In the meantime, while trying to locate the source of the problem, I've had to jump start my vehicle several mornings. So far, I've jump-started about 5 times, and it has started easily and immediately every time - without the slightest hesitation. This is all on the initial charge, so indeed it is capable of multiple jump starts on a single charge. Couldn't be happier with the small size, light weight, and safety features as well.