SOC Victron Connect / Smart Shunt

[SimpleSlowRoad]

Hi folks. New here and very much a newbie.

Have 2x 240ah itech batteries, w victron smart shunt, and am using the victron connect app, and cross referencing occasionally w itech app.

This morning there was a glitch of some description where we went from being around 84% to 100% in 11 minutes according to vc app.

Itech app shows each battery singularly, and was showing around 60% and 100%.

Had a itech shunt and display, but it died and victron installed by auto elec in an ‘emergency’ some weeks back, when everything was at 100%

Attaching pics that will hopefully make sense
We are currently out in the middle of nowhere, off grid, with minimal knowledge
Thank gawd everything else is still working!!

Tried uploading photos but it would only allow one so hoping the collage will at least show the %s and timestamps

Thanks, Sarah

[pwfarnell]

Most likely still on default settings which can cause the SmartShunt to jump to 100% prematurely. There is a good write up in the DIY FAQ sticky post. Default 13.2V charged voltage needs increasing to 0.1-0.2V below absorption voltage on your charger.

Battery monitor jumping to 100% or reporting a high SOC with low Volts / the BMS shuts down

This topic covers the reported SOC being out of sync with the actual battery voltage or state. It covers BMV battery monitors, SmartShunts, Lynx BMSs and Lynx Shunts and will just be called shunt below. It is also assumed that the shunt is monitoring the domestic / house / cabin battery bank and not engine start / bow thruster / winch / caravan mover battery banks. The problems may be one or more of the following and is often linked to mobile applications with small solar systems. The SOC jum…

[SimpleSlowRoad]

Thankyou for that @pwfarnwell
I will go through the article slowly and see what I can learn.
Really appreciate your response. ◡̈