This power bank is ver good and offers a lot for the money spent on it has both way fast charging ie.can be charged by a fast charge ( upto qualcomm quick charge 3.0) and also fast charge the devices connected to it. The power bank also has a very high efficiency when compared to other brands it can charge my MI A1 for about 5.4times form 1-100, that means it holds upto 16500mah of charge which is very good.This high capacity enables you to even charge a macbook air 1.5 times if you are the person on the go then you can get through a week and half with one full charge of this.
The power bank's build is not as good when compared to 10000mah version as this is build from plastic rather than metal which confuses me and but still it has hold up pretty well in my use but you have to be careful .The power bank also has a low power charging mode for small devices like mi bands smart watches etc. The power bank also has 2 ports, and it supports pass through charging like the power bank can charge other devices while it self getting charged helpful if you travel a lot. All in all must buy powerbank in this modern times or for travellers who need a lot more battery for their use.
Pros:
Cheap
High efficiency
Very high capacity
Low power mode
Cons:
Weaker build as compared to 10000mah version
None