LG BLACK BATTERY FOR VX9100 VX-9100 ENVY 2 ENV2 VX9100 enV2 Stay connected with families and friends by getting extra battery power today! This replacement battery has an integrated microchip that prevents overcharging and lengthens battery life. Best replacement for the original battery with comparable standby and talk time. Great bargain with excellent quality guaranteed! Cell type: Lithium Ion The battery operation time depends on conditions such as: Transmitting power level, Signal (distance between the phone and the base station), and Network parameters defined by the operator.