Smart Shunt shows 70%-100% charge instantaneously

DIY
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5

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