What doe the smart shunt actually measure?
Please take a moment to watch the video below for step-by-step guidance, or follow the step-by-step written directions.
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Install the shunt in the correct place
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Place the shunt on the negative cable between your battery bank and all loads/chargers.
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This ensures every bit of energy going in or out of the battery passes through it.
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Let the shunt measure electrical flow
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As electricity moves in or out of the battery, it passes through the shunt.
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The shunt detects this flow by creating a tiny, precise voltage drop.
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Convert voltage drop into current (amps)
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The device uses that small voltage change to calculate:
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Positive amps = charging the battery
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Negative amps = discharging the battery
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Track total energy over time (amp-hours)
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The shunt continuously adds up all current flow:
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Example: 10 amps for 1 hour = 10 amp-hours added
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Example: 5 amps for 2 hours = 10 amp-hours used
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Keep a running battery balance
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It continuously tracks:
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How much energy has gone in
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How much energy has gone out
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This gives a real-time “account balance” of your battery.
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Calculate State of Charge (SOC)
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The shunt compares used energy to total battery capacity.
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Example:
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If you have a 200Ah battery
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And you’ve used 50Ah
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The battery is at 75% charge
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Provide more accurate readings than voltage
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Instead of guessing based on voltage (which is unreliable for lithium batteries), the shunt measures actual energy flow.
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This makes it similar to a fuel gauge for electricity.
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Periodically recalibrate for accuracy
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When the battery becomes fully charged and charging current drops near zero:
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The shunt resets/“syncs” its calculations
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This keeps readings accurate over time.
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