Replace your Palm Tungsten T3 Battery or Keep an Extra Battery on hand as a backup. This is a Super High Capacity 1100 mAh, Lithium-Polymer Battery that offers up to 40% more up time than your original. Works in your Palm Tungsten T3 unit. Simple, Easy and Inexpensive! You get a New Battery, Easy to Follow Installation Instructions, AND You also get a full ONE YEAR Money Back Guarantee -exclusively when you purchase from us.