Actually, I've found this image on google.
Seem like a 400ego battery, but what is on the top? Maybe a CE5 with a cover around.
It looks ok and small to carry.
That looks like a cartomizer with an ego cone covering it. Like the one in this link Smokeless Image | The Best Electronic Cigarette
Really a kit like this one would probably treat you well. EVOD 650 Starter Kit £44.99 - Deluxe Vaping Kits - EVOD 650 Starter Kit Electronic Cigarettes | Vaping Devices | Accessories | E-Liquid eVod's are a great little clearomizer and the kanger eVod battery's are made to match them.