Should The Battery Sensor Be Connected To The Positive Or Negative Pole?

Battery sensors are generally connected to the positive or negative pole of the battery. So, which end should it be connected to?
Generally speaking, there is no clear regulation on the connection method of battery sensors, but in the automotive industry, most manufacturers recommend connecting to the negative pole. The advantage of connecting to the negative pole is that it can minimize the impact on the working state of the battery during operation and ensure the accuracy of the data.
If the battery sensor is connected to the positive pole of the battery, because the positive electrode potential of the battery will gradually decrease during the discharge process, while the negative electrode will continue to increase, connecting to the positive pole will have a certain impact on obtaining the battery status data. However, the actual installation "positive and negative" positions will vary depending on many factors such as the model, car series, and assembly equipment. Here we only give the theoretical possibility of the connection method.