The nimbleness of a small tool can be invaluable — imagine using a soldering pen with a 1.5-pound battery and you'll understand why. Another advantage of USB tools over cordless alternatives is ...

We know what you’re thinking. There’s no way an 8 watt USB-powered soldering iron could be worth the $5 it commands on eBay. That’s what [BigClive] thought too, so he bought one ...