Just got new Lynx Shunt, and a new battery setup. The battery bank was charged to 100% SOC before shunt was set up. The Lynx Shunt has been set to a battery capacity of 250Ah. The system has been left alone for a few days with a low load on it. Now the shunt reads 92% SOC and 38.4 consumed Amp hours. But, with 38.4Ah consumed from a battery with 250Ah SOC should be 84.64%, right? What did I miss here?
So the capacity is rated at a certain current draw or C rate. At a low load you are likely way under that.
Draw lower than that the capacity of the battery is technically higher. So it is not exact maths. There is a peukerts exponent as well that will also affect how it all correlates. If you want it to have no effect on capacity set it to 1.
It may take one or two adjusments to get it right for your use.
What batteries do you have and what are your settings?
As hinted by @Alexandra Peukert should be at 1.05 for LiFePO4.
Another thing to check. Most, if not all of the shunts have this. Not sure about Lynx, but I expect it's there.
Under battery settings is a current threshold. Currents lower than this are ignored. You can change the setting, try lowering it. .
Probably take some time to get to know the settings and what they are used for.
For it to be accurate you need to customize it for your battery and use.
https://www.victronenergy.com/media/pg/Lynx_Shunt_VE.Can/en/battery-monitor-settings.html
