Documented servo power usage best practices

docs/source/robot_building/best_practices/servo-power-usage.rst

@@ -1,7 +1,29 @@
 Servo Power Usage Best Practices
 ---------------------------------
+There are many best practices that teams should keep in mind regarding servo usage.
 
-.. todo::
-   Add servo power usage best practices content.
+Voltage Compatibility
+^^^^^^^^^^^^^^^^^^^^^
+It is important to make sure that the servo you are using is compatible with
+the port you are plugging it into. Most servos are designed to accept a range
+of voltages which you can find in the spec sheet from the manufacturer. The REV
+Control Hub and the REV Expansion Hub both provide 5V to servos, while the
+goBILDA Servo Power Injector, REV Servo Power Module, Studica Servo Power
+Block, and REV Servo Hub all provide 6V.
+
+Current Draw Limits
+^^^^^^^^^^^^^^^^^^^
+Each pair of servo ports on the REV Control Hub and REV Expansion Hub is
+limited to 2A. Additionally, the 6 servo ports and +5V auxiliary part have a
+maximum of 5A total. Therefore, it is recommended to only place servos on ODD
+or EVEN ports, and not both, which means only placing up to 3 servos on each
+Control or Expansion hub. Teams should also be mindful of the 20A fuse on the
+which limits the full electrical system.
+
+Power Source
+^^^^^^^^^^^^
+The power from each servo port is only for powering servos connected to that
+port, and servos should only be powered for the servo port they are connected
+to. The Competition Manual prohibits teams from mixing power between devices.
 
 See the :doc:`Servos <../../control_hard_compon/rc_components/servos/servos>` page for background on servo ports and power.