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Voltage at Battery z900A4

Posted: Thu Jun 15, 2023 11:33 am
Author: Pete D
Chaps

Having checked the voltage at my battery terminals through a range of engine speeds, I was surprised to note it reads 15.7V at 3500 rpm. Normally, I would suspect a dodgy regulator, but I note (from the Haynes manual) that the Z regulator limits voltage to 15-16V.

Before I replace, could I ask wiser heads if such high voltage is normal on our steeds?

Yes, I have tried a forum search, but no simple answer available!

Re: Voltage at Battery z900A4

Posted: Thu Jun 15, 2023 3:53 pm
Author: kev edwards
Short answer is no, probably regulator rectifier issue.

Re: Voltage at Battery z900A4

Posted: Thu Jun 15, 2023 5:44 pm
Author: Pete D
Thanks. As I thought….

Re: Voltage at Battery z900A4

Posted: Thu Jun 15, 2023 6:17 pm
Author: zed1015
Should be around 13.8 volts max above around 2k rpm.

Re: Voltage at Battery z900A4

Posted: Thu Jun 15, 2023 9:10 pm
Author: Pete D
Thanks again.