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Personal experience story. I was getting the less than peppy cranking and had my battery checked at Auto Zone or Oreilly, I don't remember specifically and it passed. When I tried Ripsaw's in bike test, the batt dropped to around 7.5 volts during cranking. That made it easy to decide, battery was gone even though it passed the "professional" load test. Yes, it was topped off by a charger/maintainer before I tried the in bike test.
The voltage load test on the bike is really crude..I agree. Depending on were my motor stops, ever now and then I get a slow groan till engine turns slightly and starts cranking. Even with my battery in good shape, with my meter on it, voltage will drop like you say but once it gets moving it will jump back up to 9.6 or so. It happens so quick, for me anyway, its hard to catch. With a five year old battery I probably am pushing my luck. However I was out of the country all winter and bike started up fine. If the date looks good on it at the store, I probably am going to get me a new one.
Why wait until you are on a trip and it wont start? Go ahead and replace battery.
Trips are American for me..local no starts are Hello Son, what are you doing? and like Happy Bob, got them in 5 vehicles and the ridding mower. The one in the 89 4x4 just died at 7 years
Last edited by Jackie Paper; Apr 23, 2013 at 07:09 PM.
hook to a meter ----
just the battery should be 12 volt or a little more
when running it should jump above 13 volt when u rev it up
if not then u have another charging problem
then test when u start it up - watch the meter,
hit the starter if it drops below 9.5, its time for new one
it sounds like u need new one
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