I couldn’t get to the settings menu until I plugged it into my car charger because it wouldn’t stay on long enough. For some reason it stayed on longer on the car charger. So once I did get it to stay on I put it in airplane mode and turned off all power draws such as Bluetooth, WiFi.
Plug into a charger that puts out the correct voltage and it will charge if the battery or plug port are not defective. Within 10 minutes it is at 7%. Give it a try.