The 1st partywireless controllers from Microsoft are great. However, they have one (small) disadvantage: the power supply. Working with AA batteries may now be called a bit old-fashioned. Fortunately, Bigben offers a helping hand with this charging station. Included are two (700 mAh) lithium polymer batteries, two replacement battery covers for your two controllers and one 2.5 meter long USB cable that connects this station to the Xbox One. Once fully charged, each battery offers up to 20 hours of play time.