From Matthew: Yes you could to this but i bash not recommend it, because if ...

Yes you could to this but i do not advocate it, because if you wire it into the motherboard incorrectly after you most likely fry your laptop. If you can figure the positive and negative need to soldered into then go a head but provided u get these rearwards it volition be reverse polarity and volition destroy your laptop! destiny . -Matthew

Source: http://answers.yahoo.com/question/index?qid=20110122100341AAGQ67f