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A lot of campers complained the inconveniences that the overweight camping spotlight torch brings. The main weight of the Spotlight comes from the 4 4-D battery. The design solve the problem with distributing the weight in to four part of the torch. When camper need to take a torch, the head could be screwed off and the weight is 1/4 of general torch. Additionally, the remain battery could use the weight of batteries themselves to stabilize the flashlight.
THE UNIVERSITY OF NOTTINGHAM. CHINA