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What Is Reverse Polarity Protection?

Posted by Michael Lucarelli on

A reversed polarity can be dangerous to your devices. You can prevent it with reverse polarity protection—but what is reverse polarity protection, exactly?

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How To Properly Use Climbing Ascenders

Posted by Michael Lucarelli on

Whether you're caving, climbing, or assisting on a search and rescue mission, ascenders are important to have. Here's how to properly use climbing ascenders.

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Tips for Splicing Double Braid Ropes

Posted by Michael Lucarelli on

Rope splicing is a simple but effective way to increase your rope’s durability and utility. Here are some useful tips for splicing double braid ropes.

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How To Choose the Right Headlamp

Posted by Tiffany Leis on

Headlamps are a great, hands-free alternative to flashlights. But with so much variety, how do you choose? Here's how to choose the right headlamp.

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21700 Battery Guide: What You Need To Know

Posted by Logical Position on

Batteries aren't all the same. One battery might fit one device, but not another, and some batteries are longer-lasting, more powerful, or more reusable than others. 21700 batteries—which are considered a substantial upgrade from the usual 18650 battery—come with unique features and, more importantly, pack a punch. Interested in learning more about 21700 batteries? Here's our 21700-battery guide: what you need to know. What Is a 21700 Battery? 21700 batteries are rechargeable, lithium-ion cells. They're used to power flashlights, cars, electric bikes, and other heavy-duty devices. The 21700 battery is named after its dimensions: 21mm in diameter and 70mm in...

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