title_body: kindle not connecting to wi-fi
upvoted_answer: No. I don't think it's because of your kindle discharged to 0. Many times my kindle also goes to Zero percentage but it connected to wifi again once I charge my kindle. If you can reset your kindle I think it might solve your issue. Please find the link to how to Reset your kindle.
  https://www.businessinsider.com/how-to-reset-kindle-paperwhite?IR=T