Hey? Can be used for iPod universal base and Apple TV. It also includes MacBook Pro, MacBook and newer iMac and Mac mini computers. The apple remote controller uses CR2032 or BR2032 lithium ion 3.0 V button cell (usually used for small electronic devices). You can find such batteries in most electronic stores, grocery stores and radio rooms. When the battery of the Apple Remote is low, an icon will appear on the computer display to remind you that the battery should be replaced. If Apple TV displays a picture of the remote control and a warning symbol (), you need to replace the battery of the remote control. At this point, the battery in the remote controller should be replaced as follows: 2nd generation remote controller: Find the battery box located on the back of the Apple remote controller. Turn the coin counterclockwise and open the battery box cover. Take out the old battery, put in the new battery, and make sure that the positive pole of the battery is facing up. Does this remote control use CR2032? 0? 2 or BR2032 battery. ? 0? Generation 2 1 remote controller: locate the battery box at the bottom of the Apple remote controller. Using a paper clip or other small and blunt object, press the release button of the battery box, and the battery bracket can slide out. Take out the old battery, put in the new battery, and make sure that the positive pole of the battery is facing up. This remote controller can only use CR2032 battery. Push the battery tray into the Apple Remote until it clicks.