OEM LG BL-A5JN Extended Battery w/ Battery Cover for LG Lucid VS840 & Viper 4G LTE LS840 3000mAh capacity Includes extended-size battery cover door (replaces original battery door). OEM LG battery ensures your phone works at optimum performance and reliability LG part no. BL-A5JN / EAC61680101; VZW part no. LGVS840BATX Compatible with: LG Lucid VS840 / LG Viper 4G LTE LS840 / LG Optimus Exceed VS840PP