When I want to charge my 840 it fully turns ON after I plug in the cable. My old 830 went straight into charging mode, no full bootup. I know I can turn it OFF right away and than it goes to charging mode, but *** it's iritating me so much. I use wall plug charger and I'm not using Sleep mode and Autosleep. Allways fully turn it ON/OFF before and after ride. Is this behavior by design or it's just my unit doing it?