Hello, this is Matthew Christian from Tampa, Florida and on behalf of Expert Village, today we're here to talk about cordless nail guns. On this particular nailer, we're using nickel-cadmium battery. Brand new from the factory, the battery if not fully charged, so you'll need to charge your battery prior to use. It's rather simple; you simply plug the charger into a standard wall outlet in your home and install the battery. A red light will come on when you install the battery, indicating that the battery is being charged and after approximately one hours time, the green light should come on indicating that the battery is fully charged and ready for use. Once the battery is fully charged, simply remove the battery from the charger. It may be stored in the provided spot inside the carrying case. Then unplug the charger from the wall and again it goes in place inside the carrying case.