Well, if your battery is heating up, then you probably have an electrical problem. If you dont know how to work on an AEG, which I'm assuming you dont, bring it to a local gun doctor. Seeing as how you live in Montreal, this should not be a problem for you.
EDIT: I guess it could also maybe be a problem with your battery. You wouldnt happen to have an extra one would you? Then at least you could figure out if it is the battery or the gun.
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