Systems, methods, and devices for current monitoring and power control

A system for power control of a plurality of auxiliary devices associated with a vehicle, comprising:

• a first power control device directly coupled to a power source of the vehicle for receiving current from the power source, the first power control device having at least one first output terminal,
• wherein the power source is a battery comprising a positive battery terminal,
• wherein the first power control device comprises a housing containing a bus bar to transfer the current directly from a positive terminal of the battery;
• and
• a second power control device coupled to the first power control device via the at least one first output terminal for receiving the current from the first power control device, the second power control device located remotely from the power source and comprising:
• at least one second output terminal configured to deliver at least a subset of the current to at least one of the plurality of auxiliary devices.

A method for power control of a plurality of auxiliary devices associated with a vehicle, the method comprising:

• providing a power control device coupled to a battery of the vehicle, comprising:
• a housing comprising a bus bar to transfer current directly from the battery;
• a plurality of output terminals configured to receive the current from the bus bar, each output terminal having an associated switch configured to control the current received from the bus bar;
• and
• a plurality of current sensors, each current sensor configured to detect an output current at one of the plurality of output terminals;
• receiving an input to turn on an auxiliary device of the plurality of auxiliary devices;
• responsive to receiving the input, actuating a switch associated with the auxiliary device to enable current flow to the auxiliary device;
• and
• responsive to detecting, by a current sensor associated with an output terminal of the plurality of output terminals, the output current having a current value below a threshold current value, disabling the current flow to the output terminal.