Atom Batteries - Any Thoughts? For A Mkii 850

[Andy25]

+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

 

Nothing has showed up in the past - ( of course I'm only checking once I've replaced the Battery then ignore till next Time )

I used to think it was because of the Cold temps I start the bike in ? the 900 only good to around  -2c  the 850 would start down to -5c 

Might  just need to get another 850 

I did use the Heated grips on Friday    I'm sure I flicked the switch off