Has your controller ever run out of battery while you were in the middle of a game? The KMD® Battery Pack for Playstation® 4 significantly increases play time so you can play for longer hours without worrying about your battery running out. It is rechargeable via any standard Micro-USB® cable and easily attaches to the back of the Playstation® 4 controller. It works in conjunction with the internal battery to provide the maximum amount of play time and it is designed to be lightweight to keep controllers ergonomics intact. Top on / off button so you use the battery anytime 1000 mAh battery significantly increases play time Rechargeable via any standard Micro-USB® cable Easily attaches to the back of the controller - no complex installation required Works in conjunction with the internal battery to provide the maximum amount of play time Designed to be lightweight and keep controllers ergonomics intact