Smart Shunt shows 70%-100% charge instantaneously

This is on a RV with AGM batteries. The graph shows starting the generator, stopping the generator, then starting / driving the RV. Finally, the RV is plugged in to shore power.

Note that the charge current continues but the SOC immediately goes to 100%

Thanks for your input

Show us your Cofiguration for the Shunt/BMV …
Maybe a wrong Voltage and/or Current in there …

What is used for charging with shore power?

Steffen, charging is controlled by a Xantex inverter. It’s set to AGM battery. Note the charging current continues linearly…but the SOC jumps to 100%?

You have to check the settings for Voltage / Time / Tail current …
because this … some Picture of the Setting …

The translations are terrible :wink:

Have a read of the FAQ on shunt jumping to 100%, which is listed along with many other FAQs for the DIYer in the sticky post at the top of DIY section.

https://community.victronenergy.com/t/shunt-battery-monitor-jumping-to-100-or-reporting-a-high-soc-when-the-volts-are-low-and-or-the-bms-has-disconnected/88

https://community.victronenergy.com/t/frequently-asked-questions-and-commonly-encountered-issues-with-diy-installs/377

Thank you for your solutions offered. Ron G

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