My phone died while charging overnight

[JC517]

I had my phone connected to wireless charger before going to bed, woke up in the middle of the night and tried to check what time it was, and it was dead completely. Like so dead that it won't give me that low battery sign. How do you prevent this from happening?

[angelg4]

Use a charger, and if you don't want your phone overcharge then turn on Adaptive charging.

[JC517]

Adaptive charging is on. A wireless charger is a charger. You mean wired charging? Then what's the point of having wireless charging function at all?

[angelg4]

If you get water in your charging port then you use wireless charging.

[angelg4]

The wattage of using a wireless charger max out at 15 watts.

[JC517]

So, my phone screen was off at night. In the span of 6 hours, it went from 60% to 0% while being charged wirelessly. Assuming 33% charging capacity (5W), it means it was using 33000mWh of battery doing something while the screen is off. I'm asking what can't it possibly be doing with that much battery whilst sleep? Appreciate your answer, but I'm not asking for a solution for the symptom, but rather a solution for the bottom line issue.

[angelg4]

You can use Battery Guardians to preserve Battery , you will need this app to launch it.
https://apps.samsung.com/appquery/appDetail.as?appId=com.android.samsung.utilityapp

[JC517]

Already have it with Good Guardian

[DickWheawill]

Do you have another device that can be charged wirelessly to see if the issue might be with the charger ?

[JC517]

It worked fine after the phone was charged a little. Another charger also works. So I'm not sure what's going on, and seems like I'm not the only one who had this happen.
https://www.reddit.com/r/samsung/comments/14dzg4r/samsung_galaxy_s23_strange_behavior/