The Canon NB-13L Battery Pack for G7 X Digital Camera 9839B001 is specially designed for the purpose of providing power for your PowerShot G7 X digital camera. Providing an output voltage of 3.6 volts this battery assures a regular and consistent supply of power. With a 1250mAh capacity this battery provides long lasting power for your camera thereby helping your camera operate for more time. In addition to that the 4.5Wh rating of the battery ensures the quality as well the energy efficiency of the battery. This battery is a replacement battery for the battery that has been provided along with the camera.