Battery is Kartells signature small lamp shade made of transparent PMMA. Its innovation lies in the fact that it can be recharged via a USB cable, and has up to six hours battery life. This makes it easy to move: ideal for contract segments, for use on café or restaurant patios. Battery has a crystal coloured cover with a faceted surface that creates fascinating plays of light, and a frame in a metallic gold or silver finish. Plus, there's also a version in different transparent shades.