Replace your Nook Simple Touch eReader Battery or Keep an Extra Battery on hand as a backup. This kit comes with an Extended Capacity 2150 mAh, Lithium-Polymer Battery that offers even more up time than your original. Works in your Barnes and Noble Nook Simple Touch eReader. You get a New Battery, Tools (necessary for installation), Video Instructions and You also get a full One Year Guarantee exclusively when you purchase our Barnes & Noble Nook Simple Touch Battery Replacement Kit. Works in B&N Nook Simple Touch eReader.