Guaranteed for One Full Year High Capacity 1250 mAh 3.7V Battery Works in NOOK BNRV100 eReaders including NOOK BNRV100 Wi-Fi and NOOK BNRV100 3G + Wi-Fi, Easy to Follow Video Instructions, Free Special Tools, and Long Lasting Rechargeable Battery with Full One Year Warranty! Kit Includes Everything You Need to Revive Your Barnes & Noble NOOK BNRV100 non-color eReader. Replace your Nook BNRV100 eReader Battery or Keep an Extra Battery on hand as a backup. This kit comes with an Extended Capacity 1250 mAh, Lithium-Polymer Battery that offers even more up time than your original. Works in your Barnes and Noble Nook BNRV100 eReader. You get a New Long Lasting Rechargeable Battery, Easy to Follow Video Instructions, and Free Special Tools needed for battery installation, and You also get a full One Year Guarantee exclusively when you purchase from us. This is not the Battery Replacement Kit for the Nook Color eReader, which can be purchased by searching for ASIN B00AEIC1EG.