The Atomos D-Tap DC Power Adaptor is a battery-type case that mounts onto the Ninja-2 or Samurai in the same way a battery would. The Atomos D-Tap allows external DC power to be supplied to a Ninja-2 or Samurai (7.2V to 16.8V DC). The Atomos D-Tap's electrical design is based around 14.4 volt battery systems in use by the professional video industry.
The name D-Tap is derived from an industry-standard connector that is made by Anton Bauer. The Anton Bauer product is called a P-tap connector. The Atomos D-Tap uses a compatible female connector which is located on the top. This connector is polarized with a plus and minus connection.
Atomos sell the D-Tap device, BUT the customer will need to purchase the compatible cable. It is a square looking connector - see Fig 1. above. This cable will need to have a male type P-tap connection at the other end to connect to the power source. These cables are available from many online professional video and photography retailers (see some examples below). It is the customer’s responsibility to ensure that the cable is wired properly for polarization (plus and minus). The power source could be a battery in a vehicle, or a professional size battery typically used on a video shoot or even a DC power source that plugs into a wall socket.