Chinese company Oukitel is going to release a dual-sim smartphone with huge battery which will have the capacity of 10000 mAh. This monster is really impressive because I never seen a phone with this kind of battery in my life.
According to the company in theory it will allow you to use the phone for one week without charging it. The name of this smartphone could be Oukitel K10000 and below you can see real photos of the device. I hope only that the device really be soon out.