Replace your Garmin GPSMAP 276 Battery or Keep an Extra Battery on hand as a backup. This is an Extended Capacity 2200 mAh, Lithium-Polymer Battery that offers up even more up time than your original. Works in your GPSMAP 276. Simple, Easy and Inexpensive! You get a New Battery, AND You also get a full ONE YEAR Money Back Guarantee exclusively when you purchase from us! Video coming soon.