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VOLTAGE Question

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berty25

Member
Hello
My 318's voltage readings' @ batteries are 14.50 when running. Is this two high of a charging rate? I have the internal voltage regulators on alternators.

Also voltage @ coils are 9-10 volts at idle and increases to 12-14 volts @ higher rpm, Is this normal for coil voltage to increase @ a higher RPM or should the coil voltage remain @ a constant lower voltage?

Set-up is electronic ignition with ballast resitor and ECU show in previous pic sent by fastjeff.

I was reading past post and thought it would be a good idea to check my own voltage readings to avoid any failures out on the water.

Your thoughts are appreciated.

Thanks
Art
 
I have similar problem. At idle voltmeter indicates static battery voltage. When I run it up to about 1800 RPM's It suddenly jumps to around 14V. It then stays there even if I return to idle. It's as if there's a switch in the alternator which turns "on" at 1800 RPM's
 
berty25 said:
Hello
My 318's voltage readings' @ batteries are 14.50 when running. Is this two high of a charging rate? I have the internal voltage regulators on alternators.

Also voltage @ coils are 9-10 volts at idle and increases to 12-14 volts @ higher rpm, Is this normal for coil voltage to increase @ a higher RPM or should the coil voltage remain @ a constant lower voltage?

Set-up is electronic ignition with ballast resitor and ECU show in previous pic sent by fastjeff.

I was reading past post and thought it would be a good idea to check my own voltage readings to avoid any failures out on the water.

Your thoughts are appreciated.

Thanks
Art
Click to expand...

Your voltages are fine.
 
Thanks for the conformation on voltages , my batteries are the self contained Odyssey PC1500MST Heavey Duty Marine Group 24 can not check electrolyte levels.
I did have them load tested and they both check out good and one was replaced under warranty.
 
Eeeh! I advise people never to buy a MARINE battery that you can't check the electrolyte levels. Boating puts lots of heat into batteries down there in the bilge, which dries them out.

Jeff
 
I agree with Jeff. I don't like to see a maintenance free battery in a boat. Marine use is totally different than an automotive application. The stupid thing is that battery manufacturers know this but some of them pawn them off as marine batteries anyway. It's just a marketing thing due to popularity and banking on those that don't know any better.
 
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