Qi charger can discharge iPhone
I have seen only one or two mentions of this and I don’t understand the mechanism. As far as I know charging is a one-way process so I was surprised to see this battery graph which is repeatable.
This particular third party charger will charge to 100% then shut off.
If I remove the phone from the charger it will retain its charge, but if I leave it on there it will discharge at an alarming rate.
Removing after charge
Leaving on the charger
I’m happy to ditch the charger but I don’t understand how this can happen.
iPhone 12, iOS 17