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what a splendid solution, working really good I have connected 5 NEEY balancers to have a home assitant based BMS for a 100s / 320v battery pack.
The power draw for the active BLE connection is for a momentary use very low, but as the BMS from the inverter can only see (and measures the SoC based on this) the amps going in and out from its side, the SoC calculation goes off after some days as the consumption of the balancer itself is not measured. For sitting in standby (and pushing out msg on BLE) the power draw accumulates over the days where there is no full charge. The inverter sets the battery to full when it hits 355v, but only then. So having winter-days with low input, the power draw from standby and BLE gets to a consumption point where the calculated SoC - based on amps in and out - is way off.
When the battery is within 25 to 90 percent SoC I would not need the data updated every couple of seconds, rather once a minute or 5, so I suggest it would be great to have a variable we could set with automations in Home Assitant to control the interval of actualization and I assume this is important for everybody running this, as the problem itself is true for all balancers as their own power consumption is not compensated by the external BMS above.
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Hello guys,
what a splendid solution, working really good I have connected 5 NEEY balancers to have a home assitant based BMS for a 100s / 320v battery pack.
The power draw for the active BLE connection is for a momentary use very low, but as the BMS from the inverter can only see (and measures the SoC based on this) the amps going in and out from its side, the SoC calculation goes off after some days as the consumption of the balancer itself is not measured. For sitting in standby (and pushing out msg on BLE) the power draw accumulates over the days where there is no full charge. The inverter sets the battery to full when it hits 355v, but only then. So having winter-days with low input, the power draw from standby and BLE gets to a consumption point where the calculated SoC - based on amps in and out - is way off.
When the battery is within 25 to 90 percent SoC I would not need the data updated every couple of seconds, rather once a minute or 5, so I suggest it would be great to have a variable we could set with automations in Home Assitant to control the interval of actualization and I assume this is important for everybody running this, as the problem itself is true for all balancers as their own power consumption is not compensated by the external BMS above.
Thank you guys in advance for looking at this!
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