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?

 

[me just saying]

there is always something running in the bacground from google services to whatever app is calling home. Then you have mobile, wifi and bluetooth that if on, will be always searching for a signal. Then you have your weather apps, clocks, email, notifications and other info that is always being updated. It is normal.

 

[1Coopgt]

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

I charge my Pixel 9Pro Xl every night on my wireless charger with no issues.

As for the OP's issue I have no clue why it would discharge if not placed perfectly on the charger.

 

[1Coopgt]

there is always something running in the bacground from google services to whatever app is calling home. Then you have mobile, wifi and bluetooth that if on, will be always searching for a signal. Then you have your weather apps, clocks, email, notifications and other info that is always being updated. It is normal.

You're right but they shouldn't run the battery of the phone down to 0 in 5 to 7 hrs. If they do the phone has a serious issue. The phone just sitting on a table should run for days if untouched which essentially the OP did only on a wireless charger.

 

[B. Diddy]

Just spitballing here, but is it possible you placed the phone on the charger in such a way that it was just on the edge of charging, and therefore repeatedly starting to charge and then stopping? In that situation, I wonder if the constant triggering of the screen to turn on (to show the charging animation) all night might have been enough to drain the battery. On top of that, if the repeated initiation of wireless charging was enough to generate heat, that might have also accelerated the battery drain.