You can easily attach the External MagSafe Battery. It's compact and intuitive, making it easy to charge on the go. And it has perfectly aligned magnets that attach it to iPhone 12 or iPhone 12 Pro for safe and reliable wireless charging. The External MagSafe Battery charges even faster when you pair it with a 27W or faster charger-like the one on your MacBook. And when you need a wireless charger, simply connect it to a Lightning cable for wireless charging up to 15W.