i was thinking of getting a powerbank, then i saw this sicoo phone which is 16000mah battery capacity which can be used to charge other devices, my mined is sticking to it, but i dont know how strong the battery is, wether it really last or the 16000mah is just written on it, peeps who have used it before should help drop review on battery mah if it can be used to charge other phones (3,000mah) for four times,