PC Mag did a few tests on the new iPad and found out that should mean a lot to all of us. With the new screen set at maximum brightness, the iPad would only play video for 5.5 hours. The iPad 2 would get almost 8 hours. With the brightness set at 50% the same video test lasted 11 hours. For those with concerns about the demands of 4G, the new iPad managed to do 25 hours of 4G streaming on a charge. To show the how much of battery demand the new iPad has, look at these numbers. The iPad 2 has a 25 watt-H battery. The MacBook Air has a 35 watt-H battery. The new iPad has a 42.5 watt-H battery, but it is using the same charger as the iPad 2 (10 watt), but the MBA uses a 45 watt charger. It takes the new iPad 7 hours to fully charge, while the iPad 2 took 4 hours. I wonder if this would be a great opportunity for a vendor to design a 25+ watt charger for the iPad?