On April 21, according to MacRumors, Apple released a firmware update designed for the MagSafe external battery, it is reported that the new firmware can achieve up to 7.5W charging without external power supply, higher than the previous 5W limit, this wave of Apple directly increased the charging speed of MagSafe by 50%, which is really "overspeed".
It is worth mentioning that the new firmware is compatible with iPhone 12, iPhone 13 series models, iPhone 11 and older models although there is a wireless charge, but not MagSafe, incompatibility is also normal.
Small partners with MagSafe external batteries only need to upgrade the firmware to version 2.7.b.0 to get a charging speed of 7.5W. There are two ways to update, one is to attach the iPhone to the back of the upgrade, but this method upgrade time is very long, it takes about a week. Another way is to use the data cable to connect to the Mac or iPad, five minutes can be updated, no Apple family barrel or honest practical iPhone update.
Xiao Lei learned that Apple MagSafe external battery and 2021 launch, the official claim that the maximum charging speed up to 15W, but many users bought to find that only external power can achieve 15W power, usually outdoor use only support 5W.
MagSafe external battery and the market ordinary charging treasure is not the same, Xiao Lei believes that the external battery is to increase the iPhone's outdoor endurance, and the charging treasure is only a tool for charging when the mobile phone is almost out of power, which means that the MagSafe battery does not necessarily need high power, but the official Apple MagSafe battery itself supports 15W, not to open to the user or a little uninteresting.
Besides, Apple's official MagSafe external battery price came to 749 yuan, most of the external batteries with MagSafe certification on the market are more than a hundred, when there is no external power supply, can provide 5W or more wireless charging power, if Apple unlocks the charging limit, it feels better to buy a third party.
Then again, from the firmware upgrade method of Apple's MagSafe external battery, the iPhone contact upgrade is far less efficient than the Mac/iPad wired update, which seems to imply that MagSafe is quite slow to transfer data. Xiao Lei previously reported that the iPhone may skip USB-C in the future, cancel the data line interface, and transmit data may be changed to a wireless form, and now the MagSafe update efficiency is so low, I really don't know how Apple is going to "polish".