The good news is that so far the iPad battery life is really good.However, there are some things you should be aware of when it does come time to charge it. When Apple introduced the iPad and subsequently put the specs up on their website, the first thing that jumped out at me was that they were specifically calling the fact that the supplied charger was a "10W USB Power Adapter".
The fact that they were announcing the wattage was an alert to me that the iPad had different power requirements than the iPhone and iPods. Typically if a manufacturer calls something out it's for a reason and I was right. So here's what you need to know: