A battery module for use in a vehicle, comprising: - a housing; - a plurality of battery cells disposed in the housing; - a battery terminal (24, 26) extending from the battery module for coupling the battery module with electrical components in the vehicle; - a contactor comprising: - a contactor switch, wherein the contactor is configured to electrically couple the plurality of battery cells to the battery terminal (24, 26) when the contactor switch is in a closed position; - a relay coil configured to receive a voltage on a high-side input and to output the voltage on a low-side output, wherein the voltage supplied to the relay coil generates a magnetic field to actuate the contactor switch; and - a printed circuit board, PCB, disposed in the housing, wherein the PCB comprises a relay control circuit configured to control a current flowing across the relay coil, wherein the relay control circuit is configured to operate in a pull-in mode to transition the contactor switch into a closed position and in a hold mode to maintain the contactor switch in the closed position, the battery module characterized in that: the relay control circuit is configured to maintain a substantially constant first level of current flowing from the contactor during the pull-in mode and a substantially constant second level of current during the hold mode, wherein the relay control circuit is configured to enable and disable a supply of voltage from the plurality of battery cells to the relay coil to maintain the substantially constant first level of current or the substantially constant second level of current, wherein the substantially constant first level of current comprises a pull-in mode current range between a first pair of threshold values and the substantially constant second level of current comprises a hold mode current range between a second pair of threshold values, and wherein the first pair of threshold values are higher than the second pair of threshold values. - a housing; - a plurality of battery cells disposed in the housing; - a battery terminal (24, 26) extending from the battery module for coupling the battery module with electrical components in the vehicle; - a contactor comprising: - a contactor switch, wherein the contactor is configured to electrically couple the plurality of battery cells to the battery terminal (24, 26) when the contactor switch is in a closed position; - a relay coil configured to receive a voltage on a high-side input and to output the voltage on a low-side output, wherein the voltage supplied to the relay coil generates a magnetic field to actuate the contactor switch; and - a contactor switch, wherein the contactor is configured to electrically couple the plurality of battery cells to the battery terminal (24, 26) when the contactor switch is in a closed position; - a relay coil configured to receive a voltage on a high-side input and to output the voltage on a low-side output, wherein the voltage supplied to the relay coil generates a magnetic field to actuate the contactor switch; and - a printed circuit board, PCB, disposed in the housing, wherein the PCB comprises a relay control circuit configured to control a current flowing across the relay coil, wherein the relay control circuit is configured to operate in a pull-in mode to transition the contactor switch into a closed position and in a hold mode to maintain the contactor switch in the closed position, the battery module characterized in that: the relay control circuit is configured to maintain a substantially constant first level of current flowing from the contactor during the pull-in mode and a substantially constant second level of current during the hold mode, wherein the relay control circuit is configured to enable and disable a supply of voltage from the plurality of battery cells to the relay coil to maintain the substantially constant first level of current or the substantially constant second level of current, wherein the substantially constant first level of current comprises a pull-in mode current range between a first pair of threshold values and the substantially constant second level of current comprises a hold mode current range between a second pair of threshold values, and wherein the first pair of threshold values are higher than the second pair of threshold values. the relay control circuit is configured to maintain a substantially constant first level of current flowing from the contactor during the pull-in mode and a substantially constant second level of current during the hold mode, wherein the relay control circuit is configured to enable and disable a supply of voltage from the plurality of battery cells to the relay coil to maintain the substantially constant first level of current or the substantially constant second level of current, wherein the substantially constant first level of current comprises a pull-in mode current range between a first pair of threshold values and the substantially constant second level of current comprises a hold mode current range between a second pair of threshold values, and wherein the first pair of threshold values are higher than the second pair of threshold values.