You are provided with 2x batteries Plus free mains adapter, simply clip it on to your Wii controller and leave it on charge, red LED indicator informs you that controller is on charge, when fully charged you get a blue LED indicating full charge. Charging stand power is provided by a USB charge cable connected from the Wii to the stand, it is an amazing design is made to match the Wii console. Please note, because this product is 100% brand new and never used before, the new batteries will need a full charge before there used.