Atom Batteries - Any Thoughts? For A Mkii 850

[fixitsan]

Could be worth checking the voltage while running, possibly cooking batteries?

+1, with the engine running the voltage should be at least 13.8, and upto 14.6 volts

 

If it's higher then the reg/rec is faulty

If it's lower then the alternator or reg/rec could be faulty

 

EDIT, another possible cause might be a parasitic draw while the bike is off, from an alarm, an immobiliser, or some other 3rd party device connected directly to the battery, such as automatic hand grip heaters

This post was last modified: 11-02-2026, 01:30 PM by fixitsan.