Awesome Life Hack Lets You Charge Your Phone With A 9-Volt Battery (Video)
Simply keeping a battery in your car's glove compartment could save you during an emergency situation.
All you need is a car charger, some duct tape, a 9-volt battery and a small piece of metal.
The secret is the physical connection of the charger and the metal, which allows the battery to power the car charger.
H/T: Opposing Views