Rabiya 4 I was looking for a small, lightweight and portable power bank to carry on my purse. It’s very small, like a lipstick and very lightweight. However, I put in trial to see its performance. It cannot fully charge iPhone 11pro when wifi is on. I do not know about when wifi is off. It can charge around 70%-80% of iPhone 11pro. Still I like it because I will carry it for emergency situation when phone battery drains out on a day trip.