AceSoft 2400mAh Li-ion Battery for ZTE Avid 559     * This package is specifically designed for ZTE Avid Model 559 from   Consumer Cellular as we stated in our listing. * There are many ZTE Avid in the market, they all use different battery. * If you do not have ZTE Avid 559 , this package is not for you.     Compatible with: ZTE Avid 559 ( Consumer Cellular ) Package Description AceSoft 2400mAh Li_ion Battery Quantity:1 Battery package might vary * This battery has the same dimension as your stock battery. * You do not need a special back cover to use it. * Brand : AceSoft * Voltage: 3.8V. * Battery Capacity : 2400mAh * High quality Li-Ion battery. * Integrated microchip prevents overcharging and lengthens battery life. * The best replacement spare battery for your phone. * Our battery is sent out with little or no power, so please charge it for about   6 - 12 hours before using. * The battery operation time depends on conditions such as: Transmitting   power level, Signal (distance between the phone and the base station),   Network parameters defined by the operator. * This Battery could also be charged in the phone directly thru the   phone charger .