Victron energy SmartShunt Manual
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Victron energy SmartShunt Manual

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ENGLISH
SmartShunt
Manual - SmartShunt
Rev 06 06/2021

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Questions and answers

Arthur J. Brown
April 7, 2025

What does a SOC alarm warning indicate? How can I fix it?

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1 comments:
Mr. Anderson
April 9, 2025

A SoC (State of Charge) alarm warning on the Victron Energy SmartShunt indicates that the battery's state of charge has dropped below a set threshold for more than 10 seconds. This typically means the battery is becoming depleted.

To fix it:
- Charge the battery to raise the state of charge above the clear value.
- If needed, adjust the alarm set and clear values in the VictronConnect App to better match your battery usage.

This answer is automatically generated

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Summary of Contents for Victron energy SmartShunt

  • Page 1 ENGLISH SmartShunt Manual - SmartShunt Rev 06 06/2021...

  • Page 2: Table Of Contents

    4.5.4. Set the auxiliary input function ................. 10 4.6. Make Lithium settings (if needed) ..................10 5. Operation ..........................12 5.1. How does the SmartShunt work? ..................12 5.2. Readout overview ......................12 5.3. Synchronising the SmartShunt ................... 13 5.3.1. Automatic synchronisation ..................13 5.3.2.
  • Page 3 Manual - SmartShunt 7.1.7. Charge efficiency factor ..................19 7.1.8. Current threshold ....................19 7.1.9. Time-to-go averaging period ................... 19 7.1.10. Battery starts synchronised ................... 20 7.1.11. State of charge ....................20 7.1.12. Synchronise SoC to 100% ..................20 7.1.13. Zero current calibration ..................20 7.2.

  • Page 4: Safety Precautions

    Manual - SmartShunt 1. Safety precautions 1.1. Battery safety warnings Working in the vicinity of a lead acid battery is dangerous. Batteries can generate explosive gases during operation. Never smoke or allow a spark or flame in the vicinity of a battery. Provide sufficient ventilation around the battery.

  • Page 5: Introduction

    2.1. Battery monitor The SmartShunt is a battery monitor. It measures battery voltage and current. Based on these measurements, the battery state of charge and time to go is calculated. It also keeps track of historical data, such as deepest discharge, average discharge and number of charge/discharge cycles.

  • Page 6: Accessories

    Manual - SmartShunt 2.5. Accessories These optional parts might be needed depending on your setup: • Temperature sensor for BMV - to measure the battery temperature. • GX device - for system and/or remote monitoring. • VE.Direct cable - to connect the battery monitor to a GX device.

  • Page 7: Installation

    The SmartShunt is rated IP21, it is not waterproof and has to be mounted in a dry location. The SmartShunt has two 5.5 mm holes for mounting purposes located in the base of the SmartShunt. The holes can be used to screw or bolt the SmartShunt onto a hard surface (screws are not included).

  • Page 8: Battery Minus Connection

    3.3.2. System minus connection Connect the negative of the electrical system to the M10 bolt on the “SYSTEM MINUS” side of SmartShunt. Make sure that the negative of all DC loads, inverters, battery chargers, solar chargers and other charge sources are connected “after” the SmartShunt: on the SYSTEM MINUS (*) connections.

  • Page 9: Auxiliary Connection Midpoint Battery Bank Monitoring

    Manual - SmartShunt Connection procedure: 1. Verify that the negative pole of the second battery is connected to the SYSTEM MINUS side of the shunt. 2. Connect the ferrule pin of the second red cable with fuse to the shunt by pushing the pin into to the Aux terminal.

  • Page 10: Auxiliary Connection For Temperature Monitoring

    Manual - SmartShunt 3.4.3. Auxiliary connection for temperature monitoring The Aux terminal can be used to monitor the temperature of a battery via the (not included) Temperature sensor for BMV-712 Smart and BMV-702 . This temperature sensor needs to be purchased separately. Be aware that this is a different different temperature sensor than the temperature sensors that are included with Victron inverter/chargers and some battery chargers.

  • Page 11: Configuration

    Manual - SmartShunt 4. Configuration Once the electrical connections have been made and the battery monitor has been powered up it needs to be configured so it is suitable for the system it is used in. This is done with the VictronConnect app.

  • Page 12: Connect To The Battery Monitor

    VictronConnect app will notify you of this as soon as a connection with the SmartShunt is made. To check if the firmware is up to date or to manually update firmware, connect to the SmartShunt using the VictronConnect app and follow below steps: •...

  • Page 13: Set State Of Charge

    Manual - SmartShunt Nominal battery voltage Recommended charged voltage setting 12 V 13.2 V 24 V 26.4 V 36 V 39.6 V 48 V 52.8 V 4.5.3. Set state of charge In VictronConnect see: Settings > Battery > Battery starts synchronized.
  • Page 14 Manual - SmartShunt A residual discharge current is especially dangerous if the system has been discharged all the way until a low cell voltage shutdown has occurred. At this moment the state of charge can be as low as 1%. The lithium battery will get damaged if any remaining current is drawn from the battery.

  • Page 15: Operation

    5.1. How does the SmartShunt work? The main function of the SmartShunt is to follow and indicate the state of charge of a battery, to be able to know how much charge the battery contains and to prevent an unexpected total discharge.

  • Page 16: Synchronising The Smartshunt

    • 3 minutes have passed while both the voltage and current conditions are met. If the SmartShunt does not perform a regular synchronisation, the state of charge value will start to drift over time. This is due to the small inaccuracies of the SmartShunt and because of the estimation of the Peukert exponent. Once a battery has been fully charged, and the charger has gone to float stage, the battery is full and the SmartShunt will automatically synchronise by setting the state of charge value to 100%.

  • Page 17: Alarms

    (k)Wh. Charge • Total charge cycles: The number of charge cycles over the lifetime of the SmartShunt. A charge cycle is counted every time the state of charge drops below 65% and then rises above 90%. • Time since last full charge: The number of days since the last full charge.

  • Page 18: Trends

    5.6. Trends The “Trends” section of VictronConnect enables datalogging, but only while VictronConnect is connected and communicating with the SmartShunt. It will simultaneously log two of the following parameters: voltage, current, power consumed Ah or state of charge. 5.7. LED Status codes Bluetooth module The Bluetooth status LED (blue) and an the error LED are both associated with the Bluetooth interface.

  • Page 19: Interfacing

    For a link to the VRM website, see: https://vrm.victronenergy.com The SmartShunt can be connected to a GX device with a VE.Direct cable, part number ASS03053xxxx. The VE.Direct cables are available in lengths ranging from 0.3 to 10 meters and are available with straight or right-angle connectors. Instead of using a VE.Direct cable, the SmartShunt can also connect to GX device using the VE.Direct to USB interface.

  • Page 20: Custom Integration (Programming Required)

    This will improve charging-efficiency and prolong battery life. To make the SmartShunt part of a VE.Smart network, you will have to either create a network or join an existing network. The setting can be found in SmartShunt settings > smart networking. Please see the VE.Smart network manual for more information: https://www.victronenergy.com/live/victronconnect:ve-smart-networking (INSERT NEW LINK)

  • Page 21: All Features And Settings

    7.1. Battery settings These settings can be used to fine-tune the SmartShunt. Please be careful when you change these settings as a change will have an effect on the SmartShunt state of charge calculations. 7.1.1. Battery capacity This parameter is used to tell the battery monitor how big the battery is.

  • Page 22: Tail Current

    Manual - SmartShunt 7.1.4. Tail current The battery is considered as “fully charged” once the charge current has dropped to less than the set “Tail current” parameter. The “Tail current” parameter is expressed as a percentage of the battery capacity.

  • Page 23: Battery Starts Synchronised

    DC system via the main DC breaker and at that moment the batteries were, for example, 75% charged. On return to the boat the DC system is reconnected and the SmartShunt will now indicate 100%. This will give a false impression that the batteries are full, while in reality they are partially discharged.

  • Page 24: Alarm Settings

    7.2. Alarm settings Please note that the SmartShunt is not equipped with a buzzer or an alarm relay like the BMV series is. The generated alarms are only visible on the VictronConnect App while connected to the SmartShunt or are used to send an alarm signal to a GX device.

  • Page 25: Low Starter Voltage Alarm

    Manual - SmartShunt Set value 1.1 V 0 - 95.0 V 0.1 V Clear value 1.0 V 0 - 95.0 V 0.1 V 7.2.4. Low starter voltage alarm This setting is only available if the Aux input has been set to “Starter battery”.

  • Page 26: High Starter Voltage Alarm

    Manual - SmartShunt 7.2.5. High starter voltage alarm This setting is only available if the Aux input has been set to “Starter battery”. When enabled, the alarm will activate when starter battery voltage rises above the set value for more than 10 seconds. The alarm will deactivate when the starter battery voltage drops below the clear value.

  • Page 27: Miscellaneous Settings

    On first install it is always recommended to update to the most recent firmware (if available). Whenever you connect to the SmartShunt with a “up to date” version of VictronConnect, it will check firmware and it will ask you to update firmware if there is a newer version available.

  • Page 28: Disabling And Re-Enabling Bluetooth

    7.8. Reset PIN code This setting can be found in the settings of the VictronConnect App itself. Leave the SmartShunt by clicking on the ← arrow. This will bring you back to the device list of the VictronConnect App. Now, click on the menu symbol next to the SmartShunt listing.

  • Page 29: Battery Capacity And Peukert Exponent

    Manual - SmartShunt 8. Battery capacity and Peukert exponent Battery capacity is expressed in Amp hour (Ah) and indicates how much current a battery can supply over time. For example, if a 100Ah battery is being discharged with a constant current of 5A, the battery will be totally discharged in 20 hours.
  • Page 30 Manual - SmartShunt Calculation example using the 5h and the 20h rating The C5 rating is 75Ah. The t1 rating is 5h and I1 is calculated: The C20 rating is 100Ah. The t2 rating is 20h and I2 is calculated:...

  • Page 31: Midpoint Voltage Monitoring

    Manual - SmartShunt 9. Midpoint voltage monitoring One bad cell or one bad battery can destroy a large, expensive battery bank. A short circuit or high internal leakage current in one cell for example will result in undercharge of that cell and overcharge of the other cells.

  • Page 32: Connecting And Monitoring Midpoint In A 48V Battery Bank

    Midpoints can only be connected if corrective action is taken in case of an alarm. 9.2. Midpoint deviation calculation The SmartShunt measures the midpoint and then calculates the deviation in a percentage from what the midpoint should be. Where: d is the deviation in %...

  • Page 33: Alarm Delay

    Manual - SmartShunt 15V (12V battery). Including a safety margin, the midpoint deviation should therefore remain below 2% during charging. When, for example, charging a 24V battery bank at 28.8V absorption voltage, a midpoint deviation of 2% would result in: Therefore: Obviously, a midpoint deviation of more than 2% will result in overcharging the top battery and undercharging the bottom battery.

  • Page 34: The Battery Balancer

    Manual - SmartShunt 9.7. The Battery Balancer A consideration can be made to add a Battery Balancer to the system. A Battery Balancer will equalize the state of charge of two series connected 12V batteries, or of several parallel strings of series connected batteries.

  • Page 35: Troubleshooting

    10.1.1. Unit is dead, no lights on On first connection the blue LED on the SmartShunt should be blinking. If this is not the case check the fuse in the Vbatt+ cable and also check the cable itself and its terminals.

  • Page 36: Pin Code Lost

    If the negative of a load or a charge source is connected directly to the negative battery terminal or the “battery minus” side on the SmartShunt, their current will not flow through the battery monitor and will be excluded from the overall current reading and the state of charge reading.

  • Page 37: Incorrect State Of Charge Reading

    10.3.5. State of charge is missing This means that the battery monitor is in an unsynchronised state. This can occur when the SmartShunt has just been installed or after the SmartShunt has been unpowered for some time and is being powered up again.

  • Page 38: State Of Charge Does Not Increase Fast Enough Or Too Fast When Charging

    Manual - SmartShunt 10.3.8. State of charge does not increase fast enough or too fast when charging This can happen when the battery monitor thinks the battery is bigger or smaller than in reality. Check if the battery capacity [9] has been set correctly.

  • Page 39: Technical Data

    Manual - SmartShunt 11. Technical data SmartShunt 500 A / 1000 A / 2000 A Supply voltage range 6.5 - 70 VDC Current draw < 1mA Input voltage range, auxiliary battery 6.5 - 70 VDC Battery capacity (Ah) 1 - 9999 Ah Operating temperature range -40 +50°C (-40 - 120°F)

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