Does the raspberry pi 2 come with some sort of power supply? When i was reading about it i couldn't find anny mention on it, so i assume i dosn't, but it it cant hurt to ask .
I purchased the RPi 2 with the Camera as a kit from MCM and it came complete with a power supply so you could put it to use quickly.
So check around, there are several starter kits at MCM that might provide everything you need.
DAB