DECENT FEATURES of the Black Diamond NRG Battery Kit NiMH battery kit compatible with the Apollo lantern and the Fall 2011 and older Icon headlamp Simple, one-step wall charging, similar to a mobile phone The SPECS Weight: 4.9 oz / 142 g Case Pack Quantity: 10 Retail Package Dimension: 7.2 x 6 x 3" / 18.4 x 14.9 x 8 cm