【 LED Indicators & LED Strap】When charging LED indicates to color RED, when charging done it turns to color GREEN. 【Safe & Easy to Use】Built-in intelligent protective chip, prevent to be over-current, over-heat,over-voltage, short-circuit. Lightly insert the battery into the controller, close the battey cover(Chosing Xbox One/Series) on the controllers, and then put them on the charging dock. 【Rechargeable & Large-capasity Battery Packs】Say goodbye to AA batteries, cycle charge over 3000 times; It takes 2.5 hours to charge 2 battery packs, 1PCS provides up to 20 hours running time, no longer withdrawn from your intense game When your controllers are out of power. 【Pecially Designed for Xbox Series & One&E