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Charging problems

arfy

CB750 Member
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Location
cornwall uk
Hi All
I have a cb 900 f 1981 american import .
When i go out for a run the battery went flat and wont start on the button.
So i fitted new brushes still went flat, fitted new rotor , still went flat.
Fitted new rectifier this morning and I am getting 12.40 max volts on the meter when engine running ,
Haven't gone out yet as its bloody cold .
Question : will it go flat with this reading 12.40 volts or do i need a new stator as well now ???
TIA
Arfy
 
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