Apple
With past iPhones, battery cases have been issued, but this type of pack connects to iPhone 12 cases because of embedded magnets. It will work for all four of the phones within the iPhone 12 category: iPhone 12, iPhone 12 Mini, iPhone 12 Pro, and iPhone 12 Pro Max. Whereas the iPhone 11 battery cases contained a physical camera shortcut button, because this particular item is simply an attachable pack, this means that it does not come along with any other attributes for the phone besides providing some extra charging power.
If it works, however, like the MagSafe wireless charger, then using the pack to top up AirPods or other devices that work in conjunction with Qi wireless charging might be doable. Apple states that the battery pack charges up to 5W of power, so it will not be the quickest way to charge one's phone. Apple also reveals that the battery is in need of iOS 14.7, which is a software update that has not yet been released.
Because the Apple website is conveying that delivery times for the battery pack will be out as early as July 22nd, it appears as though the software update will be out soon in order to accommodate it. Ultimately, the goal for the MagSafe Battery Pack is for individual phones to obtain more battery life if they are getting ready to die.
Although Apple has not revealed battery life approximations or charge capacity, one particular item photo insinuates that the MagSafe battery contains 1,460 milliampere per hour, or about half of an iPhone 12's 3,110 mAh battery. All in all, this new battery pack that is being released by Apple will surely become a commodity that challenges older models or forms of technology that they have released.