• Victron Connect App

  What is ‘Low SOC Shut-Down’ in VictronConnect Inverter Settings using Multiplus-

  Posted by Tirlant on January 20, 2024 at 8:00 am

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  In the ‘Inverter’ settings within VictronConnect (after connecting my Multiplus-II to my computer, using the MK3 USB interface device), I found an option for ‘Low SOC Shut-Down’. Could you explain what this feature entails and its utility in systems where battery voltage isn’t a reliable indicator of battery charge level?

  Arannis replied 5 months, 2 weeks ago 2 Members · 1 Reply
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  Arannis

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  January 20, 2024 at 9:04 am

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  The ‘Low SOC Shut-Down’ setting in the ‘Inverter’ section of VictronConnect is a feature that allows you to specify a State of Charge (SoC) threshold at which your MultiPlus inverter will turn off to prevent over-discharging the batteries.

  Purpose:

  • This function is particularly useful in scenarios where the SoC, (which represents the remaining battery capacity as a percentage), is a more accurate reflection of the battery’s energy status than voltage alone.

  • This can be the case in advanced battery technologies, like lithium-ion, where the voltage remains relatively stable until the battery is nearly depleted.

  Function:

  • When the ‘Enable Battery Monitor‘ setting is active and the system can track the SoC, the ‘Low SOC Shut-Down‘ feature becomes available.

  • You can set a specific SoC percentage at which you want the inverter to shut down, thereby preserving the remaining charge and prolonging battery life.

  Use Cases:

  • It’s a crucial setting in systems where deep cycling the battery is harmful or in mission-critical applications where it is essential to reserve a portion of the battery capacity for emergency situations.

  Setting the Value:

  • The optimal shut-down SoC value will depend on your specific battery technology and application.

  • For example, for many lithium-ion batteries, manufacturers may recommend not discharging below 20% SoC to maintain battery health.

  By configuring the ‘Low SOC Shut-Down’ setting, you ensure that the MultiPlus inverter ceases operation before the batteries reach an excessively low state of charge, thus avoiding potential damage and extending the batteries’ lifespan.

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