Please don't double post, this is a forum not MSN. People will eventually get to your question but remember that we are not here at your beck and call.
... specially since we don't really encourage underaged airsoft.
Now, to properly answer your question, as well as further reference, your gun is loosely based on an AK47 from Tokyo Marui. Hence, most of what fits that gun should fit yours.
On the site you listed there is a product selector, which will eventually lead you to this:
http://www.cheapbatterypacks.com/mai...r=15&model=122
TL;DR don't bump your question again unless it's been a few days.