Over the past few years mobile power banks have become a very common thing, pretty much all of my friends have them. This is likely a combination of phone manufacturers trying to keep their phones thin and the fact we are using our smartphones more and more, with many people using their smartphone as their main computing device. With that we need to constantly keep our phones charged, and if you are on the go that can be difficult. That is where mobile power banks come in. ROMOSS has sent us three of their mobile power banks to check out, all of which can be used in different situations. These include the UPower 10000mAh, ACE 10 10000mAh, and Q Series 5000mAh. Let's take a look a see if one of these will suit your mobile charging needs.