You're getting ready for that once in a lifetime exotic trip. You will spend over a day in travel and want to pack as light as you possibly can. Carrying non-rechargeable batteries will increase your luggage weight exponentially, but you not sure what the availability of batteries will be. Spare Rechargeable Battery Packs are the answer. You will never be caught without a fully charged battery pack when you have a spare set ready to install. Underwater Kinetics NiCad Battery Pack Universal Fits: Light Cannon 100, C8 Xenon, Sunlight C8 eLED,C8 eLED, C8 eLED Plus, Aqua Sun eLED Rechargeable