This guide features all of the details that we know about the new MagSafe Battery Pack and how it works.
Design
The MagSafe Battery Pack has a rectangular design that matches the shape of the iPhone, and it attaches to the back of an iPhone 12, 12 mini, 12 Pro, or 12 Pro Max to provide extra power.
Apple only debuted the MagSafe Battery Pack in white, and it has an Apple logo. It is sized to take up the full rear of the iPhone 12 mini below the camera cutout, while it has a smaller fit on the other iPhone models.
The back side of the MagSafe Battery Pack that's visible has a rounded look with rounded corners, while the front is flat with a MagSafe indentation.
There is a built-in Lightning port for charging the MagSafe Battery Pack.
Charging Speed
The MagSafe Battery Pack charges an iPhone 12 model at 5W when out and about, with Apple limiting charging speed due to heat concerns and to prolong battery life.
When the MagSafe Battery Pack is attached to an iPhone and plugged in to a Lightning to USB-C cable that's connected to a 20W or higher charger, the iPhone is able to charge through the MagSafe Battery Pack at 15W.
Most people will need the MagSafe Battery Pack while on the go, and in this situation, it's good to be aware that charging is limited to a slower 5W speed.
Battery Size
Apple did not provide details on how much additional battery life an iPhone user can get with the MagSafe Battery Pack.
The MagSafe Battery Pack has a 7.62V, 11.13Wh battery inside, with an mAh of 1460. Comparatively, the iPhone 12 and 12 Pro have a 10.78Wh battery, the iPhone 12 mini has an 8.57Wh battery, and the 12 Pro Max has a 14.13Wh battery.
Qi-based wireless charging is not efficient and some of the battery capacity is lost, so it's not entirely clear just how much the MagSafe Battery Pack will charge up an iPhone 12, especially as charging capacity may vary based on temperature conditions.
Roughly, the MagSafe Battery Pack may provide one full charge for the iPhone 12 mini and a partial charge for the rest of the iPhone 12 models.
Reverse Charging
The MagSafe Battery Pack has a reverse wireless charging feature. This means that if you charge your iPhone, the MagSafe Battery Pack will also charge at the same time.
So you can charge both the iPhone and the MagSafe Battery Pack through the Lightning port on the MagSafe Battery Pack or through the Lightning port on the iPhone, and you'll get the same ultimate result with both devices charging up.
Apple says that this charging method is useful for when the iPhone is plugged into another device, such as a wired CarPlay setup or when an iPhone is connected to a Mac.
When charging the iPhone and MagSafe Battery Pack simultaneously, the iPhone will charge to 80 percent or higher before the MagSafe Battery Pack begins to charge.
Note that a 20W or higher power adapter is recommended for charging and is required for charging the iPhone at 15W when the MagSafe Battery Pack is plugged in.
Viewing Charging Status
The power level of the MagSafe Battery Pack can be viewed in the Batteries widget that can be placed on the Home Screen or accessed through the Today View. MagSafe Battery Pack battery level is displayed alongside the iPhone, Apple Watch, AirPods, and other connected accessories.
Heat and Charging Control
There are built-in charge management features in the MagSafe Battery Pack that are designed to help maintain battery health in situations where the MagSafe Battery Pack is connected to power for long periods of time.
Apple says that an iPhone 12 might get warm while it charges. If that happens, to extend the lifespan of the battery, Apple says that the software might limit charging above 80 percent. If this happens, Apple recommends moving to a cooler location as the iPhone will charge again when the temperature drops.
When using the MagSafe Battery Pack to charge an iPhone, you might get a notification that that the iPhone will only charge up to 90 percent. To charge beyond 90 percent, Apple recommends opening Control Center, pressing and holding on the Low Power Mode icon, and then tapping "Continue."
If Optimized Battery Charging is activated, you may also see a Lock Screen notification letting you know when the iPhone will be fully charged. To force a charge you can tap and hold the notification, then tap Charge Now.
Interaction With Other MagSafe Accessories
The MagSafe Battery Pack can be attached to a naked iPhone or to an iPhone with a MagSafe case attached. If you use a leather charging case, Apple warns that the case might show imprints from the compression of the leather, which is normal. Those concerned about the imprints should use a non-leather case.
Because the MagSafe Battery Pack needs direct contact with the iPhone, accessories like the MagSafe Wallet need to be removed.
Compatibility
The MagSafe Battery Pack works with the iPhone 12 mini, the iPhone 12, the iPhone 12 Pro, and the iPhone 12 Pro Max. It will charge other devices like the iPhone 11 lineup because it's just Qi-based wireless charging, but only the iPhone 12 models have magnets to keep the MagSafe Battery Pack in place. iOS 14.7 or later is required.
How to Buy
The MagSafe Battery Pack can be purchased from the Apple website for $99.
Guide Feedback
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Tags: MagSafe, MagSafe Accessories
This article, "Apple's MagSafe Battery Pack: Everything You Need to Know" first appeared on MacRumors.com
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