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Charging test

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El__burro:
Hi, any quick link to how to test if the system is recharging the battery on K2.

I don't have an ammeter just a regular tester.

Thanks
el__burro

Johnwebley:
a useful guide is start the bike,

  turn the head light on,and press brake so that come on as well,

 slowly rev the motor towards 2,000rpm,if it is charging,the lights should brighten,after 2.000rpm they may dim slightly as
the charge rate is checked by the regulator,


  do it at dusk,it helps you see the difference,

El__burro:
is it that simple?
Tried and it does.
Thanks

K2-K6:
As John has pointed out, the headlight going brighter as you increase revs from tickover shows the charging output in increasing as it should do. A very valid quick and dirty firstline check.

If you have a voltmeter,  then connect to battery, should show about 12.5 to 12.9 volts with bike turned off. Turn on and start, volts should now show about 13.5 to 13.95 volts as this is a normal charge rate for most systems. You may have to rev it to about 2000 rpm to see the max figure.

Most systems (apart from some of the newer stuff)  will cut off at 14 volts max to avoid boiling the battery dry. If they can sustain anything above 13.5 then they should have the ability to keep the battery charged and at a healthy level.

Finally with it running, start turning any lights you have on to increase the demand and the alternator should if healthy be able to maintain the charge rate that you saw without the lights on.

El__burro:

--- Quote from: K2-K6 on July 17, 2016, 09:24:29 PM ---If you have a voltmeter,  then connect to battery, should show about 12.5 to 12.9 volts with bike turned off. Turn on and start, volts should now show about 13.5 to 13.95 volts as this is a normal charge rate for most systems. You may have to rev it to about 2000 rpm to see the max figure.

Most systems (apart from some of the newer stuff)  will cut off at 14 volts max to avoid boiling the battery dry. If they can sustain anything above 13.5 then they should have the ability to keep the battery charged and at a healthy level

--- End quote ---
Not sure if I have got it right but I did exactly that yesterday, I attached the voltmeter to the battery and revved a bit, it went to about 15v, (I am surprised it didnt blow any lights off).

I will retry the test again tomorrow but.. can it be, also could this be the reason for a roasted battery?

Thanks
el__burro

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