Hello,
I removed the top and bottom panels from my Enertia basic in order to troubleshoot a battery balancing issue and I saw this device underneath the top panel. It was unplugged. According to "Internet", this is an exciter/transducer that basically turns any hard flat surface into a speaker. In this case, my top panel.
Is my Enertia supposed to talk to me?! Like audio alarms and alerts? It was unplugged, so maybe I never heard it. I've never heard of this feature on a Brammo.