This battery is a nice in that it's small and lightwieght, but the usage time and the price are an issue with me. I mostly use it in my relatively new HDR-CX240 to record my children's school and travel basketball games, and those usually last 45-60 minutes per game. Once the battery life indicator gets to 3/4, it seems as if it discharges faster, and that's taking into account that I always close the camera's view finder during timeouts and breaks in action to conserve energy. I can't afford to let the battery totally discharge while filming so I usually swap out with a spare after every game. I have been brave enough to go a game and a half before changing it out, but I won't go longer than that. I may try to experiment with some games that don't matter to me to see how long it will last, but not on the important ones. I have to keep three on me at all times to be sure. One good thing is that they usually recharge relatively quickly. My one other issue is the price. I love Sony products, but they tend to be a little more pricey than needed IMHO. Not even counting the cost of my camera, three batteries and a charger have set me back $150. For that kind of money, I should get better battery life. In comparison with my older HDR-CX-220 camera with the NP-FV100 battery, I could record at least 4 games before putting a dent in the battery life. It may have been bulky, but it was a beast in longevity. If Sony could increase the battery life by 50%, then I would give it an excellent rating.