Ridiculous battery drain while on standby?

[Android Central Question]

A few times now (and I think only since the update to Pie), my pixel 2 has lost about 50% overnight. Has anybody else experienced this problem? The only thing I can think of as to the reason, other than the update, is that my antivirus ('kaspersky internet security') might be running a scan without my knowledge, but I'm pretty sure I've had that app for way longer than this problem.

 

[belodion]

Check whether it is. I had overnight drain, though not as much as yours, and not on a Pixel, which I eventually tracked down to a pre-installed security app scan, occurring every morning at 06.26 or some such.