YN4L&reg; 3x 3500mAh extended battery for LG Viper 4G LTE Sprint LS840 + Black cover + Dock Charger HIGH QUALITY BATTERY CELLS: This YN4L LG Viper 4G LTE Sprint LS840 Extended Battery is manufactured and tested under strict quality control standards. This Extended Battery will provide you with up to 500 Lifetime Charge Cycles with a high-speed and efficient charge. Keep your phone powered with our high quality, rechargeable Lithium-Ion batteries. An excellent, high-capacity Extended Replacement for your original Battery. Great as a spare Battery! COMPATIBLE WITH: The YN4L 3500mAh LG Viper 4G LTE Sprint LS840 Extended Battery is compatible with the LG Viper 4G LTE Sprint LS840 REPLACEMENT / SPARE / BACKUP BATTERY: Almost doubles your talk time, browse time, and standby availability with a capacity of 3500mAh! Includes a special, high-capacity extended back cover for your phone. ***The original battery door that came with your phone will not fit your phone while using this battery*** PACKAGE CONTENTS: 3 X YN4L Extended Batteries ; 3 X YN4L Black Extended Battery Back Door Covers ; 1 X ARC Wall Dock Charger SATISFACTION GUARANTEED: If you are not 100% satisfied with your order, just let us know. Customer satisfaction is our #1 priority. Be sure to buy from DealArmy for authentic items as they are the only authorized seller of YN4L batteries on Amazon!