Replace your Garmin Nuvi 670 Battery or Keep an Extra Battery on hand as a backup. This is an Extended Capacity 1150 mAh, Lithium-Polymer Battery that works in your Garmin Nuvi 670 GPS. Simple, Easy and Inexpensive! You get a New Battery, a FREE Torx Tool and Shim Tool (necessary for installation), a Video Installation Guide AND You also get a full ONE YEAR Money Back Guarantee exclusively when you purchase from us.