article_snippet.sent: The gadgets are powered by Lithium-ion cells and output ranges between 0.2W and 1.2W.
article_snippet.sent: The gadget (pictured) is powered by Lithium-ion cells and output ranges between 0.2W and 1.2W.
highlights_snippet.sent: Gadget is powered by Lithium-ion cells and can be ordered from Patrick Priebe .