A battery management system for an electric vehicle comprising: a first terminal for electrically connecting one terminal of a battery of the electric vehicle, a second terminal for electrically connecting an electric load of the electric vehicle, a third terminal for electrically connecting a chassis of the electric vehicle, a first determination circuit (130, 230) conductively coupled with a first node between the first terminal and the second terminal and conductively coupled with a second node to the third terminal, the first determination circuit (130, 230) comprising: a first voltage divider which comprises a first series circuit with at least a first resistor and a second resistor; characterised in that the first determination circuit (130, 230) further comprises: a first switch which is conductively coupled in parallel to the first resistor and which is coupled between the first node and a node between the first resistor and J Z the second resistor, so that, when the first switch is ON, the first resistor is short-circuited and that, when the first switch is OFF, the first resistor is not short-circuited, a first measurement circuit configured to measure a first voltage across the second resistor, when the first switch is OFF, and to measure a second voltage across the second resistor, when the first switch is ON; and wherein the battery management system further comprises: a processing circuit configured to determine a leakage path resistance between an other terminal of the battery and the chassis of the electric vehicle based on the first voltage, the second voltage, and a voltage of the battery. a first terminal for electrically connecting one terminal of a battery of the electric vehicle, a second terminal for electrically connecting an electric load of the electric vehicle, a third terminal for electrically connecting a chassis of the electric vehicle, a first determination circuit (130, 230) conductively coupled with a first node between the first terminal and the second terminal and conductively coupled with a second node to the third terminal, the first determination circuit (130, 230) comprising: a first voltage divider which comprises a first series circuit with at least a first resistor and a second resistor; characterised in that the first determination circuit (130, 230) further comprises: a first switch which is conductively coupled in parallel to the first resistor and which is coupled between the first node and a node between the first resistor and J Z the second resistor, so that, when the first switch is ON, the first resistor is short-circuited and that, when the first switch is OFF, the first resistor is not short-circuited, a first measurement circuit configured to measure a first voltage across the second resistor, when the first switch is OFF, and to measure a second voltage across the second resistor, when the first switch is ON; and wherein the battery management system further comprises: a processing circuit configured to determine a leakage path resistance between an other terminal of the battery and the chassis of the electric vehicle based on the first voltage, the second voltage, and a voltage of the battery. a first switch which is conductively coupled in parallel to the first resistor and which is coupled between the first node and a node between the first resistor and J Z the second resistor, so that, when the first switch is ON, the first resistor is short-circuited and that, when the first switch is OFF, the first resistor is not short-circuited, a first measurement circuit configured to measure a first voltage across the second resistor, when the first switch is OFF, and to measure a second voltage across the second resistor, when the first switch is ON; and wherein the battery management system further comprises: a processing circuit configured to determine a leakage path resistance between an other terminal of the battery and the chassis of the electric vehicle based on the first voltage, the second voltage, and a voltage of the battery.