Category Archives: Problems with Charging and State of Charge

CANBUS Elcon Charger isn’t charging, but should be (for standard Orion BMS)

Start with everything setup such that the charger should be charging the batteries. Step 1. Open the BMS utility and select File -> Connect to the BMS. If you are unable to connect ot the BMS, see the Troubleshooting Guide … Continue reading

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Generic on/off charger isn’t charging, but should be (for standard Orion BMS)

Start with everything set up such that the charger should be charging the batteries. The following assumes that the charger is connected to the BMS using the charger safety relay output. Step 1. Open the BMS utility and select File … Continue reading

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Brusa charger isn’t charging but should be (for standard Orion BMS)

Start with everything setup such that the charger should be charging the batteries. Step 1. Open the BMS utility and select File -> Connect to the BMS. If you are unable to connect to the BMS, see the Troubleshooting Guide … Continue reading

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Eltek charger isn’t charging, but should be (for standard Orion BMS)

Start with your system set up such that the charger should be charging the batteries. Step 1. Open the BMS utility and select File -> Connect to the BMS. If you are unable to connect to the BMS, see the … Continue reading

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Charger turns off before battery pack reports full state of charge

A charger may shut off before the Orion BMS reports the programmed maximum state of charge for several reasons. The vast majority of problems relating to chargers turning off before the BMS reports maximum state of charge turn out to … Continue reading

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State of charge suddenly jumps up and down

The Orion BMS primarily calculates state-of-charge (SOC) by coulomb counting, which is a way of monitoring the amount of current going into or out of the battery pack. However, the BMS also has an algorithm for correcting the calculated state-of-charge … Continue reading

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Discharge or charge relay turns off too soon

Possible Causes: The current limits may be hitting 0A. For the Charger Safety relay and the Charge Enable relay this means that the charge current limit (CCL) might be hitting 0A causing the relay to latch OFF. For the Discharge … Continue reading

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Cell voltages drop after the charge completes

Cell voltages drop after the charge completes. This is often the normal behavior of the cell. A cell’s voltage will rise when it is being charged and will begin to drop somewhat after the charge current has been removed. This … Continue reading

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