This portable 20,000 mAh battery has car battery clips that attach to it that allow you to charge your car in an emergency. The tiny size of the battery and clips makes it a perfect item to store in your car, especially in the winter when your battery is more likely to die. When not being used to revive your car’s battery in an emergency, the battery can also be used to charge your smart phone or tablet as it has 2 USB slots on it.

Available at amazon.com for $99.95