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Voltage reading with engine running
- Thread starter Robby
- Start date
tabbibus
Jetboaters Admiral
- Messages
- 2,513
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- Location
- Lake Lanier, GA
- Boat Make
- Yamaha
- Year
- 2018
- Boat Model
- 242 Limited S E-Series
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- 24
Mine is anywhere from 12.8 to 14 ish. But I think I;m having battery issues so wouldn't use me as a good example
Robby
Well-Known Member
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- Boat Make
- Yamaha
- Year
- 2016
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- AR
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- 19
Yeah my friends 2018 Yamaha ski reads 14 but I am never seeing close to that. I found a service manual for a older sx190 that’s says peak is 13v. Mine is a 2016 ar192 so just wondering what it should be.
Bransc1986
Jet Boat Lover
- Messages
- 14
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- 72
- Location
- Spokane, Washington
- Boat Make
- Yamaha
- Year
- 2018
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- AR
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- 19
Mine typically runs around 12.5 at idle but if I’m running her it will climb up a little over 14.
Beachbummer
Jetboaters Admiral
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- 23
Output varies with power, perhaps leave the voltage meter attached on the next trip and glance at it at greater RPM to see the effect?
Gunner
Jet Boat Junkie
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- Southeastern, Mass
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- Yamaha
- Year
- 2018
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- AR
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- 19
Over 14v when running.
tabbibus
Jetboaters Admiral
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14.1 at idle is odd. Shouldn't it be 12.7 max if not being charged? I'm new to this, so I may be wrong.
Gunner
Jet Boat Junkie
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Only took it out once. Didn't notice voltage at idle but was over 14 v at cruising speed.
Robby
Well-Known Member
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- 2016
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They should be 14 even at idle or else you have a bad connection or weak battery. My cousin just bought a new one also and it’s the same. This may not be true on older ones. Mine is 2016 and his is 2018
bronze_10
Jetboaters Admiral
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- 23
On my older boat if I have the battery switch selected to one battery it reads over 14.. if I change the switch to both batteries it drops to about 13 or so..
Beachbummer
Jetboaters Admiral
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It depends on battery state of charge at low rpms I believe. For a fully charged battery it has no trouble reaching 14v, but for a battery in need, it cannot do that at idle.
That's my theory.
That's my theory.
Garrett C
Jet Boat Addict
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- Year
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Mine is always hovering around 14 volts, never seen anything different.
ripler
Jetboaters Captain
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Not sure about the 1.8s but my MR1 is a little over battery voltage at idle and at 3500 the manual says it should be 13.
