LancairTalk is an authorized EarthX seller. When you buy EarthX batteries from LancairTalk you support the community without requiring advertising or expensive annual fees. If you have a choice where to purchase please consider LancairTalk for all your avionics, parts and aircraft sales assistance. We ship within a few hours of ordering. Email sales@lancairtalk.net or call 866-300-KNOT (5668) to order.