To compare the different algorithms discussed, the SOC error can be used. The error in SOC is a direct reflection on the accuracy of the gauging algorithm. A smaller SOC error represents a more accurate gauging algorithm and vice versa. The SOC error is found by taking the difference between the true SOC and the calculated SOC. Since a TI impedance track gauge was used for the test, the calculated SOC for the Impedance Track algorithm was reported in the data collected. However, this means that the calculated SOC for voltage correlation, voltage + IR correction and coulomb counting algorithm have to be computed as well as the true SOC.