Txtumbleweed, I have 4 of the Bauway ego 1300mAh batteries, 2 black and 2 silver. They all work well and last me all day into the next. I do NOT like the Bauway "mega cartomizers" for it. Though they hold 3ml of juice, they are not working well with the factory juice inside. I want to empty one and fill it myself with a syringe, however I just can't use it enough to empty it. I keep picking up my Leo instead. The vapor out of them is minimal, at best, and the juice flavors are weak tasting, if not nasty (I have cappuccino and mint flavors). The mint vapors nicely, but tastes like I made out with a koala bear. The cappuccino is just so weak or watered down there's barely any vapor. Every day I pick them up and take a few puffs hoping the flavor and vapor will change... to my dismay.
As for the 3000mAh Mega Ego, Bauway made a mistake naming it that. It has nothing to do with "Ego", doesn't look like one, and so on. They put the Ego name in it because that is the most 'searched' for e-cigarette, I'm sure. The thing looks more like a giant 170mm round from a gun than anything else. They should have named it aptly "Cannon fodder", because it is fodder.