Interference Free
The MagSafe Battery pack has been engineered to not interfere with other wireless items you may have nearby or in your pockets, such as credit cards or key fobs.
Fast Recharging
When it's time to recharge the battery pack, simply use an (optional) power adapter and Lightning cable. If you use a 15W adapter, the MagSafe Battery Pack will recharge itself while connected to your iPhone 12/13. If you use a 20W or above power adapter, the battery pack and your iPhone 12/13 will recharge at the same time. However you recharge, you can monitor how it's going on your phone's lock screen.