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Old 16-02-2019, 12:18   #1
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What to believe

My link 10 is reading 14. 6 volts . Both victron are reading 13 and change . Cant find the multi meter. All settings are correct.
Which to beleive .
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Old 16-02-2019, 12:44   #2
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Re: What to believe

Victrons

check connections too
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Old 16-02-2019, 12:50   #3
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Re: What to believe

Quote:
Originally Posted by admiralslater View Post
My link 10 is reading 14. 6 volts . Both victron are reading 13 and change . Cant find the multi meter. All settings are correct.
Which to beleive .
A conservative approach:

1) Understand what your specific high cut/low cut values are

2) Until you are able to test the instruments, respect whichever instrument is telling you that you're near a danger zone
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Old 16-02-2019, 13:05   #4
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Re: What to believe

Depends on which ones are connected where, and how far the burden wires run.

Voltage drop is a thing. Loads matter, and everything in the circuit has its own impedance. Even simple DC resistive circuits can get complex. Imagine how wild AC equations can get when you add power factors and leading and lagging currents and voltages with induction and capacitance. ELI the ICE man cometh. You might have a number of different MPPT solar, wind, and shorepower chargers messing up the system in small ways with harmonics of AC waves induced with switching power supplies mixing in to further spoof the meters in your system.

The only way to be sure is to get a good meter and read voltage directly at the source on the battery terminals. And even that isn't a great source of charge information. A battery hydrometer on a wet lead-acid cell is your go-to telltale source, or onboard diagnostics on the fancy lithium and AGM batteries.
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Old 16-02-2019, 13:39   #5
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Re: What to believe

Thanks I will chase the connections. Now everything is reversed after a full day pfsar and 2 hours of engine this morning the victrons are reading 11.3 and the limk 10 13.0 . All my refriration is operational which it would not normally be if the victrons are correct . Gor those not familiar with my plight I crashed my fire fly bank and am trying to bring it back to life
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Old 16-02-2019, 22:56   #6
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Re: What to believe

are you monitoring 2 different banks?...
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Old 17-02-2019, 04:47   #7
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Re: What to believe

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Originally Posted by smac999 View Post
are you monitoring 2 different banks?...
Because I had the issues with the bank I had spmit off one battery to see what it did when left alone. I hook the victon batterysensor to it .
What idid not know was that the voltage was transmitted to the controllers , I thought it was just the temperature.
That is what gave me the erroneous reading
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