Every parent knows the constant cycle of buying or recharging batteries for kid-related products—but the Instructables web site has some guides to modifying your gadgets to use AC power instead of ...

The battery as we know it today was an invention of Italian chemist and physicist Alessandro Volta. He witnessed electricity splitting water into its constituent elements of oxygen and hydrogen and ...

The revolution in portable and cordless appliances has meant that we now own far fewer mains-powered gadgets than we might once have done, but it hasn’t entirely banished the old AC outlet from our ...