"Let's say you connect [an extension cord] to a floor heater," Martinez says, "the plug melts and it starts a fire. That's ...

Reviewers say this energy bank can run for over 24 on a single charge, to keep your devices juiced up in an emergency.

Dyson stick vacuums usually go for upward of $300, so the fact that this very similar-looking model has nearly 3,000 ...