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15 Wh Battery


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Product Code: V!5+ACCESS

The V15, 4,000 mAH Lithium Polymer battery outputs 5 volts at up to 1,000 mA to power a GoPro camera or other accessories.

There are a lot of battery packs available, however, most of the batteries on the market have an automatic power saving feature which turns off the battery when the camera is charged. Often, this feature is not even mentioned in the battery description, and only discovered when you find the camera's internal battery is dead, even though the high powered battery is still fully charged.

CamDo has been working with Voltaic Systems to develop batteries that are suitable for operating GoPro cameras for extended lengths of time and can be used in an Always On mode to avoid shutting down.

Under normal circumstances, the GoPro battery will last for one to two hours of shooting. The CamDo Intervalometer and Programmable Scheduler can extend the battery life considerably, but in many cases, that is not enough. Motion Detector installations may need to run unattended for extended lengths of time and time lapse installations may require power for weeks on end. The V15 battery lengthens the GoPro battery life by approximately 4x.

Calculating battery life is non-trivial. It depends on the camera model, firmware version, SD card speed, lighting conditions, battery size, age of the battery, ambient temperature, and more. To help you understand the issues and to calculate estimated battery life, consult the Camera Power Consumption Study and our Time Lapse Calculator.

The V15 battery fits in all of our Weather Resistant Enclosures and is included with our  Solar Power System.
  • Always On Mode

    • Selectable Always On Mode to avoid shutting down when insufficient current is being drawn from the battery such as when the camera is fully charged.

    Battery Specifications

    • Capacity: 4,000 mAH, 15 Wh
    • Output: 5 V, 1000 mA
    • Input: 5-6 V, 1000 mA
    • Maximum Output Power: 5 Watts
    • Weight: 4.4 oz (126 g)
    • Dimensions: 4" x 2.6" x 0.6" (102 x 65 x 16 mm)

    Reliable Charging Circuit

    • The battery is protected against failure due to overcharging, over discharge, overcurrent (short circuit), unusual voltage input, and temperature extremes.

    LED Power Indication

    • LEDs light sequentially when charging to indicate the current capacity at < 33% (1 LED), 33-66% (2 LEDs), 66-95% (3 LEDs), 95%+ (4 LEDs). A flashing LED indicates the battery is charging

  • Camera

    Compatibility ( Y / N )

    HERO4 Black

    HERO4 Silver

    HERO (2014)

    HERO3+ Black

    HERO3+ Silver

    HERO3 Black

    HERO3 Silver

    HERO3 White



  • If you have a problem with your battery or need more detailed information, you can ask the folks at Voltaic. They will be most helpful. Voltaic Support.

    Frequently Asked Questions

    How long will the battery last before it is discharged?

    It depends on many factors: the controller you are using, the camera you are using and the shooting schedule you have programmed. There are just too many variables to give an accurate answer.

    In theory, the 4,000 mAH V15 battery combined with the standard GoPro 1,050 mAH battery will give you about 5 times the shooting time.

    The 12,000 mAH V44 battery combined with the standard GoPro 1,050 mAH battery should give you more than 12 times the shooting time.

    An analysis of the power consumption of the various GoPro cameras and an explanation of how to calculate the theoretical battery life is outlined on the GoPro Power Consumption page. Our Time Lapse Calculator page can be used to assist you in planning the interval times of your time lapse project.

    How can I tell when the battery is in always on mode? Change modes?

    If you hold down the power button for six seconds and the charge indicator flashes 3 times and stays lit for a second or two, you are now in Always On mode. If you hold down the power button for six seconds and the charge indicator flashes 2 times and then goes dark, you are in Auto Off mode.

    If you are not in the desired mode. Press the button again for 6 seconds to change modes.

    When not using the batteries, it is recommended that you switch back to Auto Off mode as Always On mode consumes a small amount of power even when there is no load.

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