Try a forced restart first , then charge it with a known-good charger for at least 30 minutes. For a Pixel 5 that suddenly went black, this is the most common fix before assuming the battery is dead.

What to do

  1. Plug the phone into a wall charger and leave it there.
  2. Press and hold Power + Volume Down together for at least 10–20 seconds.
  1. If nothing happens, keep it plugged in for 30 minutes and try again.
  2. If you see a battery icon or a vibration/logo, let it charge longer before turning it on.
  1. Check the charging cable, charger, and wall outlet by trying them with another device.

If it still looks dead

  • Clean the charging port gently in case lint is blocking contact.
  • Try a different cable and charger, ideally original or certified ones.
  • Remove any case or accessory that might press the buttons or interfere with charging.
  • Connect it to a computer with a USB cable and leave it for 10–15 minutes, then try again.

Signs it may need repair

If the phone gets warm, shows no charging icon at all, or still won’t power on after a long charge and forced restart, the battery or power hardware may have failed. In that case, a repair shop or Google-authorized service is usually the next step.

Important note

Avoid repeatedly trying random fixes if the phone battery looks swollen, the phone overheats, or it was damaged by water; those are hardware-safety issues rather than simple battery drain.

TL;DR

Charge it, then do Power + Volume Down for 10–20 seconds. If that fails after 30 minutes on a known-good charger, the issue is likely the cable, port, battery, or internal hardware rather than a simple “dead battery”.