Sounds like everything that could go wrong, has gone wrong.
From Mark Gurman’s “Apple Is Working on Magnetic Battery Pack Attachment for IPhones” posted Friday by Bloomberg News:
In internal testing, the magnetic attachment system has proved strong enough for the charging unit to stay in place, but the accessory’s development has been slowed by software issues such as the iPhone erroneously indicating that the pack is overheating. Apple also has been working to mend issues related to a customer switching between using the device on an iPhone sometimes with and without a case.
Given the new accessory’s development challenges, it could ultimately be delayed or scrapped, the people said. An Apple spokeswoman declined to comment.
Apple’s hardware engineering department is careful about launching accessories related to charging. In 2017, the company announced an AirPower mat that would charge an Apple Watch, iPhone and AirPods earphones at the same time. It was ultimately never released and canceled deep into its development in 2019 due to issues related to overheating…
The company has also discussed other MagSafe accessories internally, including the potential for an in-car attachment, one of the people said, though that product hasn’t made its way into formal development.
Apple has also internally discussed a goal of letting many of its mobile devices like Apple Watches, AirPods, and iPhones charge each other, but that functionality is unlikely in the near future. For the 2019 iPhones, Apple planned, but canceled, a feature that would let users charge AirPods on the back of the phone.
My take: What, no short circuits and spontaneous fires?