My MacBook Air battery keeps draining overnight

Hey guys, this problem has been happening for a couple of days. My battery keeps draining overnight and I don't know what is the workaround for this. The activity monitor earlier mentioned chrome having the highest battery usage so I quit the app and started using safari. Today I wake up to this - spotlight consuming the most battery. Any help for this? Thanks

[Edited by Moderator]

Original Title: Battery Draining overnight