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voltage drop in the heat


9C1

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In the 90 degree temps lately I notice when I get into heavy traffic the voltage readout is showing high 12's or low 13's when it's normally showing 14.4 or so volts.  Once the bike is cool or the outside temps drop, the voltage reading goes back up.  I didn't notice the starter seem to turn over just a little more slowly in this heat so I don't know if I should start thinking about a new rectifier or if it's in need of a fan to help get it cooler.  Any help is appreciated.

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  • Member Contributer

When the radiator fan comes on, this will cause a noticeable drop in battery charging voltage. It's quite normal. 

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