Nintendo New 3DS XL /LL Mugen Power Triple Juice Power 6250mAh Extended Battery Upgradeable Kit "Not Including Game and Console" (New Red Cover) Original Battery 1750mAh ; Mugen Power Extended Battery 6250mAh "Over 3X Longer Runtime" 8- 12 hours for nonstop play under brightness & largest volume setting Perfect seamless fit to New Nintendo 3DSXL device Extended Battery + Back cover + Screw diver for easy installation 12 Months Warranty