Charge your batteries in just one hour and be back on the water in no time! The 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 adapter cable. The docking station has only three buttons, making it very easy to use. You will find an instruction sticker on it that explains how to charge or discharge the batteries. The indicator lights, as well as the blinking LED lights on the batteries, inform you whether the batteries are being charged or discharged and what their charge level is. To ensure you can easily plug the charger into your outlet, it comes with a suitable plug or adapter for your region (EU, USA, Australia, and the United Kingdom).