iPhone battery drains when device is turned off
The battery of a brand new iPhone SE 3rd gen. drains significantly when it is off over night (see screenshots). I had the phone replaced for a new one some weeks ago and now this problem happens again.
I did a factory reset, several calibrations of the battery, use a power adapter and cable both of Apple brands and did not overcharge the device. The battery report says the battery had 100% capacity. That was the same for the first device before it was replaced. I use the power adapter and cable with two other another iPhone, iPod and iPad for years and never had any problems with it.
The drainage occurred two time so far. It was more often with the first device and the time between the drainage shortened little by little. I am afraid it will be too for the current iPhone.
I have AppleCare+ but I would like to avoid another replacement, if Apple would do it anyway, because there seems no problem with the phone. The support could not find any issue with the battery and other hardware at the remote checkup last time.