Replace your Magellan Roadmate 1340 Battery or Keep an Extra Battery on hand as a backup. This is a High Capacity 720 mAh, Lithium-Ion Battery that offers even more up time than your original. Works in your Magellan Roadmate 1340 GPS. Simple, Easy and Inexpensive! You get a New Battery, an Installation Video, FREE Torx and Shim Tools (necessary for installation), AND You also get a full ONE YEAR Money Back Guarantee exclusively when you purchase from us.