Hanging can't tell if it is

I got my chuwi ubook today birthday present plugged in all I see Is a red light no idea when it’s fully charged I can’t leave it plugged in 24/7 I’ll have no tablet left in a week. Problem blow up. Why did this come with no battery charging icon. I DONT WANT IT. EVERY PC laptop tablet desktop has an icon showing how far its charging. I’m pissed. My surface pro shot landlord got me this. It’s useless without knowing if it’s charging is it done charging . What are all of you doing will they take it back its not my fault.i didn’t build it.