Aside from the actual battery life it delivered, our biggest concern with the unit was how the extended battery might affect the ergonomics of the PSP once it was clipped on to the bottom of the console. The bad news is that it does make your PSP pretty beefy, almost doubling its size (the battery weighs 5 ounces). That said, the battery has a nice, rubberized feel to it, and the PSP--while it certainly feels heavier--doesn't sit awkwardly in your hands, causing potential hand or finger cramps (If you play for a while, you will get cramps regardless, but that's true whether the Blue Raven battery is attached or not). For movie watching, it would have been nice if the battery had a built-in kickstand for propping up the PSP. But we suspect the company thinks most people who buy the battery will be playing games on their PSPs rather than watching them.
As for battery life, we drained the extended battery twice--once playing a game and once looping a UMD movie. We managed just less than 11 hours with the movie and slightly more with the game (MLB 07). Blue Raven says you can expect to get 8 to 15 hours, depending on the game you're playing. All in all, we were pleased with the performance.
The big question is whether it's worth buying this large battery or simply buying a couple of extra small PSP batteries. The problem with the smaller batteries is that you have to charge them one at a time in your PSP--and that can be bit of a drag. By contrast, the nice thing about the Blue Raven battery is that once you juice it up (most likely overnight), you're good to go for a whole day. For most people, that's overkill--but if you have the need to play for hours on end without having to stop for a recharge, the Blue Raven 15 Hour Extended PSP Battery will get the job done.
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Blue Raven PSP 15 Hour Extended Battery:
