Supercharge your flashlight with more power and longer battery life! Our battery extension will typically achieve a power increase of 3 Volts which is a great compliment when paired with our LED bulb. Several extensions can be combined to achieve 7,8,9,10 cell Maglight’s. Adds the body for 1 or 2 D Cell Batteries to your Maglight Gang-able in order to achieve 7,8,9,10 cell Maglight’s Machined from Aluminum and Anodized Black Fits 2D, 3D, 4D, 5D, 6D cell incandescent model Maglight’s Does not fit Factory LED Model Maglights (ML Series)