Portable Charger PowerCore 20800mAh - USB-C Premium Power bank by Arglo, Faster, safer charging with our advance technology. Ultra-high capacity for Galaxy S8, Note 8, iPhone and More (black)

We are really impressed! It completely recharged my phone four times, my wife’s phone, a friend’s phone and my Tablet twice (this is just what i can remember). Still has half of its juice left and we’ve had it for maybe 2 weeks and have not had to plug it in yet. Thank you!

Charges my phone, my headsets, and my ps4 controller and still has plenty of juice. Also has a flashlight built in. It's big and heavy but with great power (21,000) at a great price (20 bucks) comes great responsibility. Dropped it a few times and it's still going strong so if you're out and about and someone tries to mug you, here you go, use it as a weapon for self defense or whatever. The flashlight is a little tricky but it's bright. Verdict: great product at a great price. 5/5

It's holds a good charge and I was able to charge my phone (samsung s8) 3 times before it ran out of power.

Works fine so far! My only criticism is I feel like it’s a brick, big and heavy.