Dual charging station for your Wii remotes comes with 2pcs of 2800mAh rechargeable batteries - no need to take out the battery when charging. No need to add extra power supply - get the power from the USB port of the Wii console. Blue LED surrounds at the stand base! It can charge for two controllers at the same time. Light indicators to show the charging status, they show a Red LED bar when charging and a Cool Blue bar once charge is complete.