Okay, so you know how it absolutely sucks when you're exploring the polar icecaps and your flashlight craps out at sub-zero temperatures because it's simply too cold? Your batteries might be to blame – and the solution might be an alternative to conventional lithium-ion cells.

Lithium batteries struggle in temperatures lower than 32 °F (0 °C) because the reaction that enables them to deliver power slows down, the electrolyte becomes more viscous and increases internal resistance, and this leads to a drop in voltage. That's no good for a flashlight which needs continuous power to operate in extreme weather.

The Sodiumfrostglow (which just rolls off the tongue) flashlight avoids this hassle by using a sodium-ion battery which can deliver stable power all the way down to -40 ºF (-40 ºC).

It's expected to retail at about US$85, but it can be had for as little as $57 apiece over on its Kickstarter campaign page. An additional battery can be tacked on to your order for $18.