I ordered this power bank because my phone is getting old and as a result the battery is wearing down. It's capacity is far less so dies early throughout the day. This way I can charge my phone up in the day, and also use it to charge my tablet too.
The power bank comes with just a short MicroUSB cable (as RAVPOWER EXTERNAL BATTERY) and a manual.
It has two USB ports, one that outputs 2.1A and the other that outputs 1A. There is a LED torch on the power bank which can be activated by double tapping the on button. The power bank charges with MicroUSB. The build quality seems good, everything feels solid and there is no creaky or weak plastic.
The power bank could easily charge my phone and tablet simultaneously, quickly and a few times.
Please note that the 25000mAh advertised is at 3.7V, this is slightly misleading as your phone will charge at 5V, so the power bank must step up the 3.7V to 5V before it charges your device.
25Ah x 3.7V = 92.5Wh
92.5Wh / 5V = 18.5Ah
So in reality this power bank is 18,500mAh of charging for your devices, it's a little misleading to advertise at 3.7V rather than 5V considering the power bank outputs at 5V. The reason I didn't downgrade my review is because many power banks do this, so it would be unfair to pick on this one. I just wanted to make people aware that the real capcity is 18,500mAh at 5V
Overall I'd recommend this power bank if you are content with 18,500mAh rather than 25,000mAh. It is somewhat big and weighty but that is to be expected of a big power bank like this.