• Victron Connect App

  What is ‘Battery Capacity’ setting of VictronConnect using Multiplus-II?

  Posted by popo on January 20, 2024 at 7:53 am

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  In the ‘General’ section of the VictronConnect app (after connecting my Multiplus-II to my computer, using the MK3 USB interface device), there’s an option to input the ‘Battery capacity’. Can you explain the significance of this setting for calculating the ‘state of charge’?

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

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  January 20, 2024 at 9:13 am

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  The ‘Battery capacity’ setting in the VictronConnect app is a critical parameter for the battery monitor to accurately calculate the state of charge (SoC) of your batteries.

  Purpose:

  • This setting tells the battery monitor the total usable ampere-hours (Ah) of your battery bank. It is essential because the SoC calculation is based on the amount of charge going in and out of the battery compared to its total capacity.

  Calculation of SoC:

  • The battery monitor uses the capacity along with current in and outflow data to determine what percentage of the battery’s capacity is full or empty. For example, if you have 200Ah batteries and you’ve used 100Ah, the monitor would show the SoC as 50%.

  Setting the Capacity:

  • You should set this value to reflect the total capacity of the connected battery bank. If you have multiple batteries in your system, add up the capacity of each battery to input the combined total.

  Correctly setting the ‘Battery capacity’ ensures that the battery monitor can provide an accurate SoC reading, which is crucial for managing your energy usage, planning your charging cycles, and avoiding deep discharges that can shorten battery life. It is one of the foundational settings for any battery-based energy system.

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