What's a reliable way to drain battery on Windows 10 without admin?

My work laptop has group policy that resets our volume if it's muted, and we don't have permissions to shut down the laptop, only sleep it. The laptop takes itself out of sleep even if it's unplugged. I have a small apartment so I can't keep it far away enough that it doesn't wake me up while I'm sleeping with email notifications. The group policy also resets the audio device so sounds always come out of the built-in speakers if I have headphones plugged in. The only solution I've found is to drain the battery to zero, but this takes a very long time. Is there something I can do on Windows 10,

Question by bitmaker on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.