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Power Forum - Renewable Energy Discussion

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nad_isa

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    My initial take on the 2% loss per charge/discharge cycle is that of SOC measurement accuracy of the BMS.  And this statement of yours confirms. There could well be a calibration error in the battery current measurement. SOC algorithm is based on integrating power and small errors in measuremt can be very unforgiving. 
    The point i would like to make is that it is probably not a poor battery as far as the cell chemistry is concerned, its a calibration/measurement concern. 
    But it is annoying and does not install confidence. 

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