The Sony PSP includes a rechargeable 1800mAh battery that delivers about anywhere from 4 to 6 hours of gameplay or video playback. If you're looking to get more juice, the easiest option is to simply buy another battery, which will run you anywhere from $20 to $40, depending on whether you buy the official Sony-branded battery (such as the 2200mAh PSP-280) or one from a third-party manufacturer. However, the idea behind Blue Raven's 15 Hour PSP Extended Battery (4500mAh) is that you'll get the equivalent of two and a half extra standard PSP batteries in one clip-on attachment that mounts to the back of your PSP. The Blue Raven battery costs about $75 online and almost doubles the PSP's depth and weight--but it's still a potentially attractive option for fanatical gamers or those expecting to take a long plane ride where a power outlet isn't available.
Installation is easy: just snap the Blue Raven battery on the handheld's back side. It fits over the existing battery and locks down with the flip of a switch on the battery's top edge. The battery blocks access to the PSP's UMD drive and Memory Stick Duo slot, so make sure you've got both in place beforehand. Likewise, any PSP cases--such as our favorite Logitech PlayGear Pocket--will need to be removed. But everything else--including the headphone jack and USB port--remains accessible when the battery is in place.
A couple of other things worth noting: the battery clipped on snuggly and has an on/off switch and one small LED light that lets you know whether the battery is charging or the battery is actually on and providing power to your PSP. (Keep the switch off, and PSP draws power from its default battery instead.) You use the default PSP charger, so there are no extra cords to lug around--and the Blue Raven battery can juice up whether it's connected to the PSP or not. An inexpensive carrying pouch is included to protect the battery when not in use.