Last week, we invested in Sanyo's Eneloop rechargeable batteries and chargers (available at Amazon and other online and local retailers) for our remote flash system (SB900/600s and Pocketwizard PlusIIs). The Eneloop system provides the performance of traditional alkaline batteries and the eco-friendliness of rechargeable Ni-MH batteries. More information is available on the Eneloop homepage.