Several years ago I acquired this Belkin 20,000mAh brick for a trip to Egypt. It turned out that we stayed in first class hotels and access to wall sockets wasn't an issue so it never got used. I pulled it out recently to have a go at using it just to see how it works. The two USB A sockets are for use with chargers and the Type C socket is for charging the brick. As expected, it worked quite well. The only downside is that its maximum power delivery is 15 watts (3A at 5 volts), which is just fine for phones and iPads. We are heading to American Samoa and independent Samoa in a couple weeks. It looks like three of the four resorts we are staying at are quite modern. One is out on an island where we will stay for three days. Maybe the brick will come in handy there.