• Victron Connect App

  What is ‘State of Charge When Bulk Finished’ setting in VictronConnect with MPII

  Posted by enerjee on January 20, 2024 at 7:54 am

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  There’s a setting called ‘State of charge when bulk finished’ in the ‘General’ section of the VictronConnect app, after connecting my Multiplus-II to my computer, using the MK3 USB interface device. Can you explain its function and how it helps to calibrate the state of charge?

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

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  January 20, 2024 at 9:13 am

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  The ‘State of charge when bulk finished’ setting in the VictronConnect app is used to calibrate the estimated state of charge (SoC) of the battery at the end of the bulk charging phase.

  Function:

  • This setting defines the SoC that your battery should be at once the bulk (or initial) phase of charging is complete.

  • The bulk phase is when the charger delivers a constant, high current to the battery until it reaches a predetermined voltage level.

  Calibration:

  • The reason for this setting is to adjust the SoC reading to more accurately reflect the actual charge in the battery.

  • Due to various factors, including measurement errors, efficiency losses, and battery condition, the actual SoC may differ from what is calculated.

  • By specifying the SoC when bulk charging is done, you help the system to recalibrate and correct the SoC measurement.

  Usage:

  • You might set this value based on empirical data from monitoring your batteries or manufacturer’s guidelines.

  • If you notice that the SoC seems off after a full charge cycle, adjusting this setting can help align the reading with the true battery status.

  Proper calibration of the SoC is important for maintaining the health of your battery bank and ensuring reliable system operation. It can prevent the system from overcharging or undercharging the batteries, which could lead to reduced battery life or insufficient power availability.

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