This is probably the most wrong place to post this. Sorry if that came out rough. I don't have a XBox so I wouldn't know, but my friends do. My suggestion would be to get the Quick Charge. A friend of mine has it and I think its far more convenient. If you're fine with buying batteries and replacing them then there is no need for the Kit.
P.S. While you're in the realm of PC gaming, why don't you look around. PCs are a very interesting thing to learn about