In his latest column for the Wall Street Journal, Walt Mossberg gives the new third generation iPods an overall positive review, but says that they do have one big drawback — battery life: “To reduce the size of the unit, Apple had to cut the size of the battery. So, the battery life of the new iPods, while still respectable, is significantly lower than it was on the original version. The old models claimed 10 hours of battery life, but mine got 12 hours. The new models claim eight hours of battery life, but my test iPod lasted only 7.5 hours — nearly 40% less than my old one.”