Apple yesterday released a firmware update designed for the MagSafe battery pack, and it was revealed that the new firmware allows for 7.5W charging when running above the previous 5W limit.
one in supporting documentApple says owners of the MagSafe Battery Pack can update their firmware to the new version 2.7.b.0 to get faster 7.5W charging capability.
You can update the MagSafe Battery Pack by plugging in an iPhone and waiting (a process that can take up to a week), or using a Mac or iPad to update in as little as five minutes. Apple recommends that users plug a Lightning cable into the MagSafe battery pack and then plug the USB side into the iPad or Mac to begin the update process.
You can check which firmware version your MagSafe Battery Pack’ is running by pairing an iPhone and then going to Settings>General>About> MagSafe Battery Pack. You will need version 2.7.b.0 to get 7.5W charging.
When the MagSafe Battery Pack” was released in July 2021, many users were disappointed to find that it would charge a maximum of 5W while on the go, as other MagSafe accessories can charge at 15W. When connected to a Lightning cable, the MagSafe” battery pack can charge at full 15W, but that’s not possible when used without a power supply.
Starting now, those who install the firmware update can charge their compatible iPhone 12 and iPhone 13 models at a faster 7.5W speed. It’s still not quite as fast as 15W ‘MagSafe’ charging, but it’s on par with the fastest Qi charging speeds available on an iPhone.