I have been reading through a large number of posts on here and a few on other forums about modifying the hardware of this particular model of eken. I haven't actually looked inside one myself as mine hasn't arrived yet - namely I am just looking for something cheap to play with and use whilst i'm off travelling.I'm not sure how many have found it - but this link here:http://www.circuitdb.com/articles/17/5Shows the inside of the m003 quite well. By the looks of it you could probably add a new battery quite easily as well as changing the wireless adaptor - although you would probably need to get one that has drivers compatible with android.By the looks of it there isn't actually much that can be altered in terms of hardware - it looks as if the RAM is embedded onto the actual board - however I cannot be sure unless I take a peek inside myself.Hope this link helps a few people out who are curious as to what's inside