Reply To: Main Fuse Great British Handcrafted Motorcycles › Forums › Spitfire – Original › Main Fuse › Reply To: Main Fuse 29 May 2020 at 10:41 #5023 John DroganStaff Hi Peter It could be that the battery voltage is dangerously low and the Oxford wont resuscitate a battery from such a state. We sell the Optimate Li-ion unit now that is known to bring batteries back from very low voltages. Regards John