Såhär står det i oxfords manual.
Battery saving mode (BSM)
– This amazing new feature recognizes if either the battery voltage falls too low, or it’s high enough but suspiciously
quiet (ie. the engine has stopped)
– When in this state, the BSM LED flashes, the power LED still lights as normal, and the button still works - but the
grips don’t actually get powered.
– As soon as the battery voltage recovers and/or there’s a bit of noise on the power supply, the ‘battery saving’ LED
goes out and the grips work as normal
– The controller goes into BSM after 5 seconds of the voltage being less than 11.5V, or after 2 minutes of not
detecting any noise on the 12V power lead. Once in this mode, it will wait a further 5 minutes or thereabouts before
switching off completely.
– If the rider does not want or like this feature, the BSM can be disabled by switching the controller on and then
pressing and holding both buttons together for 5 seconds.
– During this time, the BSM LED will indicate whether the BSM feature is currently enabled (LED on) or disabled
(LED off).
– After 5 seconds the state of the LED will change, and the user can let go of the buttons.
– The controller remembers this state permanently, or until the user switches it back by repeating the above procedure.
Så den "lyssnar" på 12v kabeln och när motorn stängs av och slutar ladda så stängs handtagen av.
Smart !
Edit: Länk för den som vill läsa hela dokumentet
http://www.oxford-products.com/downloads/OFV8-USA-Instructions.pdf
