MoonBright LED Mason Jar Lights, Battery Powered for Wide Mouth - Warm White (Lid Light Only) by PaperLanternStore This Battery Powered LED Mason Jar Light in warm white can be used with any wide mouth mason jar. Includes 20 LEDs which are attached to a thin copper wire, wires are attached to a built in battery unit affixed to the lid. No assembly required. Simply put in the batteries and screw on the lid to any wide mouth jar and turn the unit on/off. PaperLanternStore Party & Event Decorations, Wedding Dcor, Party Supplies, Table Top Dcor, Star Lanterns, and much more. PaperLanternStore's unique selection of paper lanterns, party decoration, wedding and table dcor come in many styles to help make your next event unforgettable. Shop PaperLanternStore for Lanterns, Wedding Decor, PaperLanternStore coupons and more. Premium Quality, Selection and Service.