SANOXY 3500mAh Extended Battery + Black Cover for HTC Evo 4G

Features:
High quality Li-Ion battery
Best replacement for the original battery with increased standby and talk time
Use as an extra battery or replacement
Integrated microchip prevents overcharging and lengthens battery life
The best replacement spare battery for your phone
Includes special battery cover for extended battery
Easy to carry, install and remove
Our batteries are typically sent out with little or no power, so please charge them for at least 4 - 6 hours before use. (12 hours before first use is suggested to "initialize" the battery)
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 and many other factors

Specifications:
Battery Type: Lithium-Ion
Battery capacity: 3500mAh
Voltage: 3.7v

Compatible With:
HTC SPRINT Evo 4g

Package include:
1 x 3500mAh Extended Battery for: HTC SPRINT Evo 4g
1 x Extended Battery Back Cover door for:HTC SPRINT Evo 4g using an extended battery
(Phone NOT included)