At the beginning of this month, Apple officially released the MagSafe Duo wireless charger. This charger was released at the same time as the iPhone 12 series. According to an official support document, the MagSafe Duo charger is compatible with iPhone 12, iPhone 12 mini, iPhone 12 Pro, iPhone 12 Pro Max, Apple Watch (all models), Apple MagSafe accessories, and Qi-certified devices.
Apple also pointed out that users can connect the MagSafe Duo charger to a 20W or higher Apple USB-C power adapter and a compatible third-party USB-C adapter through the USB-C to Lightning data cable. It can also be connected to a Mac or PC. USB-C port. However, all users should note that the Apple 29W USB-C power adapter is not compatible with the MagSafe Duo charger.
The is the latest information from Apple regarding the MagSafe Duo charger. This may be because the adapter does not support the rated power of 5V/3A or 9V/1.67A. When MagSafe Duo is connected to the 29W adapter, it can only charge the iPhone or Apple Watch, but not both devices at the same time. Recall that Apple discontinued the 29W adapter in 2018 and replaced it with a 30W version compatible with MagSafe Duo.
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Apple MagSafe wireless charger is annoyingly slow with older iPhones
Is the MagSafe Wireless charger strictly for the iPhone 12 models? The answer is NO, but do not be too happy. The MagSafe charger can technically be used with older iPhones, but the charging speed is annoyingly slow. According to MacRumors, two tests with the iPhone XS Max suggests that this charger can not be recommended for older iPhones. In the first test, the MagSafe charger charged the iPhone XS Max to 13% in 30 minutes. For the second test, the iPhone XS Max battery hit just 14% in 30 minutes. This charger is so slow that you may be forced to think that it is harmful to your battery.
In addition, many Qi-based wireless chargers are not as slow as this charger. In fact, even a Qi-based 7.5W charging speed is faster than this charger. For reference, a 7.5W charger can charge the iPhone to about 25% in half an hour. This is almost twice the charging speed of the MagSafe charger for older iPhones.
In another test of the iPhone XS Max with a standard 7.5W Belkin charger under the exact same conditions as the MagSafe charger, the battery hit 26% in 30 minutes. For those who do not have an iPhone 12, and wants to buy a MagSafe charger to use with an old iPhone, it is not worth it. This is because the charging speed is too slow, it is best to use a standard Qi charger.