A question for the pros

I'm having issues with my laptop charger. It takes me 4 hrs of messing around to get 15 minutes online worth of charge. My question to you computer aficionado, is it possible to charge through a PS2 port?
I know there is power there because you can charge your cell from a computer PS2 port so can it go the other way?
I know there is power there because you can charge your cell from a computer PS2 port so can it go the other way?