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Old 28 December 2009, 16:41   #11
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Batteries are SFL type and as far as I can tell there is no facility to refill, but as I understand it there is a vent. But I've never had any funny acidy smells in the console.

Perhaps the gauge is out of calibration. I'm going to give it a once over tomorrow and will let you all know how it goes.
Its easy to check Andy just take a voltage reading using a multimeter across the battery terminals whenteh engine is running on muffs.
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Old 28 December 2009, 16:43   #12
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You need to be careful if the charge voltage reading is much above 15V as this could lead to gassing of the battery .... over charged batteries can and do explode.
Yep, they do. The electrolyte boils off so the plates are exposed, when you crank the engine and require big current the gas will ignite.... Don't ask how I know... and it was less than 15volts at charging.
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Old 28 December 2009, 17:03   #13
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I've been reading some other forums and flicking though the manual. Seems there is an over voltage alarm that should put the engine into limp home mode 1500RPM should an overvoltage situation arise, there is something similar on the Chartplotter too. Well that hasn't happened, so I'm sure the gauge will be at fault.

I hate reading forums when looking at possible faults as you then have to seive though reams and reams of posts about other problems all relevent to your engine make and model, it's a rather unpleasant experience.
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Old 28 December 2009, 17:37   #14
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Originally Posted by Hightower View Post
I've been reading some other forums and flicking though the manual. Seems there is an over voltage alarm that should put the engine into limp home mode 1500RPM should an overvoltage situation arise, there is something similar on the Chartplotter too. Well that hasn't happened, so I'm sure the gauge will be at fault.

I hate reading forums when looking at possible faults as you then have to seive though reams and reams of posts about other problems all relevent to your engine make and model, it's a rather unpleasant experience.
Just relax, forget about it, and tomorrow just check it at your leisure. As you say, it is probably just a faulty meter
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Old 28 December 2009, 18:18   #15
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Just relax, forget about it, and tomorrow just check it at your leisure. As you say, it is probably just a faulty meter
That's OK I am totally relaxed, you get like that after a few Hope you're feeling better. Fit for Wed or Thurs?
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Old 29 December 2009, 09:11   #16
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Just come in from the Cold and Rain (having problems typing with numb fingers) after doing some checks and it would appear that the gauge is out.

Checked voltage across both batteries one was 12.72 and the other was 12.65 so both very healthy.

Ran up the outboard and checked the voltage using the depth sounder and came in at 14.4v at tickover, backed up by the meter on the batteries. Couldn't find the battery indicator function on the Garmin but to be honest I already had the info I needed. I then ran the outboard at 3000 RPM (woke up the neighbours ) and voltage increased to 14.6v's so very happy!

I'll have the gauge out at some point and measure it on the bench mounted powersupply I've got just to confirm the gauge is out of Cal and that there isn't any other funny thing that's happening. But I'm confident that all is a OK!
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Old 29 December 2009, 13:06   #17
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I'll have the gauge out at some point and measure it on the bench mounted powersupply I've got just to confirm the gauge is out of Cal and that there isn't any other funny thing that's happening. But I'm confident that all is a OK! [/QUOTE]

Phew! Glad you got to the bottom of it. Bloody boats.... Who'd have one eh!
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Old 29 December 2009, 14:24   #18
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I'll have the gauge out at some point and measure it on the bench mounted powersupply I've got just to confirm the gauge is out of Cal and that there isn't any other funny thing that's happening. But I'm confident that all is a OK!
Phew! Glad you got to the bottom of it. Bloody boats.... Who'd have one eh! [/QUOTE]

What baffles me is that it shows 12.6v's with the ignition on but engine not running

But hey I've covered over 200miles since first noticing this and was probably like it for a long time before.
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Old 29 December 2009, 14:49   #19
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glad all is ok, I find having the voltage show on the garmin data bar a usefull
indication as to the battery charging condition, with a low and high voltage alarm set.
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Old 29 December 2009, 16:16   #20
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glad all is ok, I find having the voltage show on the garmin data bar a usefull
indication as to the battery charging condition, with a low and high voltage alarm set.
I found a low voltage alarm on the Garmin I have, but couldn't for the life of me find the actual "live" voltage info. Just as well I had my meter to hand and the Navman Depthfinder.
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