Opt for the rechargeable NiMH battery pack for increased lumens! This airline-safe battery pack will last up to ten years with proper care, and will boost your C8 eLED L2 to a max of 1200 lumens. Also compaitible with the Light Cannon eLED L1. Note that this NiMH battery pack is only for the UK C8 eLED L2 and Light Cannon eLED L1. This product is not compatible with the previous versions of these lights (C8 eLED L1, Light Cannon eLED).