The Apple MagSafe Battery Pack (MGPG4) is a precision-engineered power accessory created exclusively for the iPhone Air. Designed to maintain the slim profile of your device, it features a thin and light build that slips easily into your pocket and feels natural in your hand, ensuring you stay powered without adding unnecessary bulk. Performance is centered around intelligent power management. When attached to a fully charged iPhone Air, the system employs smart behavior to determine the best times to recharge, maximizing overall battery life. For those moments when you need a rapid boost, the pack delivers up to 12W of fast wireless charging on the go, adding up to 65 percent additional charge to the iPhone Air—extending its battery life further than any other iPhone model. For users seeking the fastest possible recovery, the MagSafe Battery can be used in tandem with a 20W or higher power adapter. By connecting the adapter while the battery pack is attached, you can charge both the accessory and the iPhone Air simultaneously at accelerated speeds. Beyond the iPhone, this versatile accessory doubles as a power source for smaller devices. Equipped with a USB-C port, it allows you to charge smaller accessories, making it a comprehensive portable power hub for your Apple ecosystem.