On BTSDA, the formula to calculate charge/discharge DCIR is R= |(V1-V2)| / |(I1-I2)|
Charge DCIR: Using first second record V1 and I1 at current charge step, minus the last second record V2 and I2 at previous charge step. Take the absolute value for (V1-V2) and (I1-I2), we can get DCIR via absolute current value divide by absolute voltage value.
Discharge DCIR:Using first second record V1 and I1 at current discharge step, minus the last second record V2 and I2 at previous discharge step. Take the absolute value for (V1-V2) and (I1-I2),we can get DCIR via absolute current value divide by absolute voltage value.
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