Maybe you're not kicking hard enough. Or maybe you're battery is too dead to give a solid spark when trying to start it. Or maybe you're just doing it wrong. Like Arizoni said, you need to make sure the piston is at TDC and kick it like you mean it. The harder you kick the lever, the faster the motor will turn and the faster your motor will start. But I think the simple fact that you started out by saying that your battery is dead and THAT is why you started using the kick starter in the first place should give you some kind of clue that you have a weak electrical system. Keep riding around with a dead battery and you can put too much strain on the charging system and cause the rectifier to fail. Then you won't have to worry about kicking, you'll have to worry about walking and pushing and calling for a tow truck.
Scottie J