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FJR Motorcycle Forums
Technical & Mechanical Problems
How to check R/R voltage on a Gen II?
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<blockquote data-quote="Viper Pilot" data-source="post: 1313924" data-attributes="member: 89205"><p>And yet another thought.................INEWLF mentioned that his battery voltage drops from 14.0 to 13.9 to 13.8 V. I have always seen the same thing occurring since day one with my '05. It is especially noticeable when it's warmer outside, temps say in the 80's. I think that is due to the effect of heat on the output of the alternator and also possibly the RR. IF it's a rather cool day, say outside temps in the high 50's/low 60's, the battery voltage starts out about 14 V and after the enging fully warms up the voltage drops to about 13.9V. Also pretty much constant over the normal riding RPM range. BTW, those voltage values are measured with the DATEL meter and when the battery is fully charged when starting out. If the batter is slightly discharged when starting out then the initial battery voltage indications are say about 13.8 and slowly rising to the 13.9 to 14.0 volts after a short while as the battery charges. Just FYI, I am using a Shorai battery (2nd one in 8 years) but noticed similar battery voltage characteristics when I was using the factory Yuasa battery.</p><p></p><p>Anyway, that's my experience. Your results may be different!</p></blockquote><p></p>
[QUOTE="Viper Pilot, post: 1313924, member: 89205"] And yet another thought.................INEWLF mentioned that his battery voltage drops from 14.0 to 13.9 to 13.8 V. I have always seen the same thing occurring since day one with my '05. It is especially noticeable when it's warmer outside, temps say in the 80's. I think that is due to the effect of heat on the output of the alternator and also possibly the RR. IF it's a rather cool day, say outside temps in the high 50's/low 60's, the battery voltage starts out about 14 V and after the enging fully warms up the voltage drops to about 13.9V. Also pretty much constant over the normal riding RPM range. BTW, those voltage values are measured with the DATEL meter and when the battery is fully charged when starting out. If the batter is slightly discharged when starting out then the initial battery voltage indications are say about 13.8 and slowly rising to the 13.9 to 14.0 volts after a short while as the battery charges. Just FYI, I am using a Shorai battery (2nd one in 8 years) but noticed similar battery voltage characteristics when I was using the factory Yuasa battery. Anyway, that's my experience. Your results may be different! [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
How to check R/R voltage on a Gen II?
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