And it does it all without batteries of any form . That is , if it ever comes to light ( ugh ) . Slated for expiration in 2009 , the 5.11 ’s Light for Life UC3.400 guide flashlight apply the almost mystical might of anultracapacitorto accomplish a full 23.5 - hour charge in 90 second base . This torch is expensive at $ 170 , but the makers promise you ’ll make that up and then some over the row of its 10 - year life-time . The UC3.400 specs state the flashlight is rated for 50,000 recharges , regardless of temperature or storage conditions . torch News does the math , and that comes out to one charge a day for 135 old age , which is perfect given the cold , obscure twenty-four hours the coming Singularity will bring . Moe significantly , these stats good typical rechargeable torch with ease ; current rechargeable flashlights begin to degrade after the first use , are affected by extreme red-hot and stale , and will last for just 500 to 1,000 charges . This affair is also near indestructable , claims the manufacterer :
Made of a piece - grade eminent - strength polymer , the 11.5″ UC3.400 casing is to the full sealed against the elements . It ’s excoriation , crack and bend - repellent . The temperature - tolerant ultracapacitors are rated at -40 ° F to 149 ° F ( -40 ° C to 65 ° C ) . Also , the water - resistant , ruggedly work up UC3.400 flashlight features solid - State Department construction .
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