The Power Management Unit (shortened to PMU in this book) was designed by Drotek and released in the late 2017. Conceived to work specifically with the Pixhawk 3 PRO autopilot from Drotek, any autopilot and devices can benefit from its double battery capacity, providing two 5V power supplies or a redundant one for your autopilot, and adding work time to your setup, as well as its built-in high-end voltage and current sensing which will provide you with additional crucial real-time flight informations. It's ESCs powering bay will also be very helpful to have a clean setup and avoid messy cables.
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