Wireless charging or uncharging?

[patruns]

So I put my phone on a wireless charger before I went to bed. Looked at the phone in the morning and the battery was down to zero. This has happened before to me and my wife (same phone). I get if I don't place it properly on the charger it will not charge, but why does it kill the battery? It was at 48% when I put it on the charger. If I had just left it on the table it would not have drained anywhere near that. Thoughts?

 

[bearone2]

fwiw:
s25+, i've never left any phone purposely charging over night wired or wireless!!

 

[gomezz]

There something left running (in the background)? Presumably you checked that it started charging when you put it on there?