Charger SetThe charger is specifically designed for the Foil Assist batteries and can hold up to two batteries at once. If you don't plan to use the batteries again that day, we recommend charging or discharging them to about 50% (2 3 LED lights). This prevents over discharge and ensures they last longer. Another advantage of this charge level is that you will need less time to fully recharge the batteries. The charger set includes a docking station and an