I installed my shunt according to the photo below only I have 2 6v batteries rather than a 12v I do not know if it causes problem.
I do not have a very exact reading of my battery levels even if I know that I used 50% it only shows me 98 or 97% I cannot anderstand the spect of my battery for the configuration of the device I think
I joined my battery spectification
Can you help me?
The picture you linked is for a starter battery and a main battery as 2 completely separate systems. If you wired it like this then you have the wrong wiring. Wire it like I have shown below. On the settings for the aux input, tell it is measuring mid-point voltage.
For the settings your battery capacity is 235Ah, charged voltage 14.2V (or 0.2V below what you charge them at), tail current start at 2%, you may be able to go lower but you will need to see how they charge, peukert exponent 1.2, charge efficiency 95%, rest left at default and see how things work.
Thanks, i try your set up and it look same at my eyes. Same problem
When the solar pannel or motor stop the charging i start to look the ‘‘discharge’’ but when the sun come back or the motor start it pop at100%
I joint pic of the we
Post a screenshot of battery voltage and current when the SOC jumps up and your settings.
I not at the boat right now but the voltage jump a 14.2v becausse the solar pannel start to change and the current depend of the sun it can be around 4amp to 8amp
OK, then I suggest that you reduce the tail current to 1%.
Also confirm that the negative wire from the solar controller is going to the system side of the shunt. It must not go to the battery side of the shunt or to the battery.
Finally, the 14.2V charged voltage on the shunt can be increased to 0.1V below your solar controller absorption setting, if you use 14.5V for solar then set the smartshunt to 14.4V.
It has to be set to match your system.
