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The Brightest and Most Durable Christmas Lights

by Justin Thomas •

Conical 5mm Wide-Angle LEDs are the most durable and brightest Christmas lights available. Almost all professional Christmas light installers use these lights for their displays. Conical LEDs are waterproof and snowproof because they are injection molded into their plastic cordage.

Do Rechargeable Lithium-Ion AA Batteries Exist?

by master •

Do rechargeable lithium-ion batteries exist in standard sizes like AA, AAA, C or D? Yes, they are finally available. A company called Kentli has released AA and AAA rechargeable lithium polymer batteries that output 1.5 volts. Kentli batteries are available on Amazon here. Update October 2018: I also found Tenavolt batteries which are cheaper than the Kentli, however I have …

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The Brightest LED Flashlights

by Justin Thomas •

These days, there are some mighty bright LED flashlights over there — ones that can rival car headlights in their shine. Let’s take at look at some of the brightest in the world: