A battery pack, comprising: a first battery contactor and a second battery contactor respectively having one end electrically connected to a positive electrode terminal and a negative electrode terminal of a battery; a first charging contactor and a second charging contactor respectively having one end electrically connected to the other end of the first battery contactor and the other end of the second battery contactor; a first measurement resistor, a second measurement resistor and a third measurement resistor electrically connected between a first node located at the one end of the second charging contactor and a second node located at the one end of the first charging contactor, between the first node and a third node located at the other end of the first charging contactor, and between the first node and a fourth node located at the other end of the second charging contactor, respectively; a first power connector having a first input terminal and a second input terminal electrically connected to the other end of the first charging contactor and the other end of the second charging contactor, respectively; characterized in that a first measurement contactor electrically connected between the first measurement resistor and the first node, and a second measurement contactor electrically connected between the second measurement resistor and the first node, and a third measurement contactor electrically connected between the third measurement resistor and the first node; and wherein the first, second and third measurement resistors (MR1, MR2, MR3) are configured to be used to measure the voltage applied to the first charging contactor and the second charging contactor, and the first, second and third measurement contactors (MC1, MC2, MC3) are configured to conduct or interrupt a current flowing through measurement resistors (MR1, MR2, MR3); and a control unit configured to control an operation state one of the first, second or third measurement contactors (MC1, MC2, MC3), based on whether one of a charging start request signal or charging end request signal is received. a first battery contactor and a second battery contactor respectively having one end electrically connected to a positive electrode terminal and a negative electrode terminal of a battery; a first charging contactor and a second charging contactor respectively having one end electrically connected to the other end of the first battery contactor and the other end of the second battery contactor; a first measurement resistor, a second measurement resistor and a third measurement resistor electrically connected between a first node located at the one end of the second charging contactor and a second node located at the one end of the first charging contactor, between the first node and a third node located at the other end of the first charging contactor, and between the first node and a fourth node located at the other end of the second charging contactor, respectively; a first power connector having a first input terminal and a second input terminal electrically connected to the other end of the first charging contactor and the other end of the second charging contactor, respectively; characterized in that a first measurement contactor electrically connected between the first measurement resistor and the first node, and a second measurement contactor electrically connected between the second measurement resistor and the first node, and a third measurement contactor electrically connected between the third measurement resistor and the first node; and wherein the first, second and third measurement resistors (MR1, MR2, MR3) are configured to be used to measure the voltage applied to the first charging contactor and the second charging contactor, and the first, second and third measurement contactors (MC1, MC2, MC3) are configured to conduct or interrupt a current flowing through measurement resistors (MR1, MR2, MR3); and a control unit configured to control an operation state one of the first, second or third measurement contactors (MC1, MC2, MC3), based on whether one of a charging start request signal or charging end request signal is received. a first measurement contactor electrically connected between the first measurement resistor and the first node, and a second measurement contactor electrically connected between the second measurement resistor and the first node, and a third measurement contactor electrically connected between the third measurement resistor and the first node; and wherein the first, second and third measurement resistors (MR1, MR2, MR3) are configured to be used to measure the voltage applied to the first charging contactor and the second charging contactor, and the first, second and third measurement contactors (MC1, MC2, MC3) are configured to conduct or interrupt a current flowing through measurement resistors (MR1, MR2, MR3); and a control unit configured to control an operation state one of the first, second or third measurement contactors (MC1, MC2, MC3), based on whether one of a charging start request signal or charging end request signal is received.