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[Revband]

A good battery will show 12.6v 24 hours after charging provided it has no load on it. The lower the voltage drops the worse the battery is,

[Super45]

So in essence test the standard battery voltage if its low ( not touched it in over a week now) then replace the battery as the system could be over compensating for lack of charge in the cells

would it be worth putting it on a charger and then retest?

[Revband]

Yes give it a full charge then leave it 24 hours and check the voltage it should be 12.6 12.8 for a good battery.

[Super45]

Ok so resting voltage after the bikes not moved in a week or been rtouched was 12.31v that's on the bike and plugged in, will remove and charge and retest once i get home


The tested the reg/rec earth connector using multimeter on the 200k setting between the black earth wire in the connector black to the earth wire at the earth point which showed up as zero so i'm assuming this means no breaks and all is good

removed the wires from the main earth and gave the earth point a good clean scraping more paint off then reattached and made sure it was tight


started bike and reattached the reg/rec and the voltage at idle came up better at 14.91 without lights on and 14.83 with the lights on so has dropped which is good but still too much, forgot to test when it was rev'd up as was running out of time

[Super45]

ok so battery charged for a good ten hours and left overnight, still showing 12.35 v so suspect thats duff, the extra earth lead is from the amp meter and goes direct to the negative terminal off the battery

refitted to the bike and started it, unpluged the reg/rec thats fitted gives 12.6v so suspect some of that is surface charge, plugging the reg rec back in gives 15.10v tested using the dc setting on the multimeter, fitted the other two combined reg/recs i've got (1 is the original) and both give the same 15.1.
so is it now a case of replace the battery and retest? or could the small regulator in the headlamp system have failed causing the extra charge back down to the battery?

cheers

Phil

[Super45]

ok so battery charged for a good ten hours and left overnight, still showing 12.35 v so suspect thats duff, the extra earth lead is from the amp meter and goes direct to the negative terminal off the battery

refitted to the bike and started it, unpluged the reg/rec thats fitted gives 12.6v so suspect some of that is surface charge, plugging the reg rec back in gives 15.10v tested using the dc setting on the multimeter, fitted the other two combined reg/recs i've got (1 is the original) and both give the same 15.1.
so is it now a case of replace the battery and retest? or could the small regulator in the headlamp system have failed causing the extra charge back down to the battery?

cheers

Phil

[Super45]

Oh and when unclipping the reg/rec unit the amp meter moves to just in the positive side of its arc in the green, unsure if this has anything to do with the fault or if its a symptom etc thought id mention it