AA rechargeable battery shootout: Energizer, PowerGenix and Sanyo Eneloop

If there's one thing that has become abundantly clear to us these past few months, it's that there's really no excuse to not invest in at least one set of rechargeable batteries if you find yourself chewing through more than a few on a regular basis. If you're an avid user of Apple's power-hungry Magic Mouse, Nintendo's oh-so-demanding Wii remote or one of the many professional camera flashes on the market, chances are you've considered buying stock in Duracell or Energizer based on how often you find yourself in the battery aisle. Quite a few devices have moved to proprietary rechargeables -- many of which can be rejuvenated over USB -- but for everything else, it's typically AA or bust. We tested out PowerGenix's NiZn cells late last year, and it wasn't long before we found ourselves in possession of two alternatives from Energizer and Sanyo. Care to see how all three of these stacked up against one another and those traditional non-rechargeables? Read on for more.