riding home last night the bike just died on me - coasted to stop - bike would crank but would not start - all lights on bright - power in battery. Datatool S4 red alarm/immob fitted - but this wouldnt just "kill" the bike while riding at 40mph would it !!!? Baffled! - Fuses fine. Fuel plentiful. If battery charge low would the bike just suddenly die while riding - should be charging from alternator surely?