What size battery do I need in order to run the SwayControl? BMPRO Customer Support December 17, 2021 01:20 The SwayControl requires a 12V battery system of greater or equal to 50Ahr. Related articles How do I remove the LED light on the SwayControl? Can I install the SwayControl myself? Does the SwayControl have fine-tune adjustment capabilities? What is the current draw of the SwayControl when it is not in use? How long does the SwayControl stay active after being woken up by braking? Comments 0 comments Please sign in to leave a comment.