A battery management apparatus for an electric vehicle, the electric vehicle comprising a front electric drivetrain comprising one or more electric motors, a rear electric drivetrain comprising one or more electric motors, first and second batteries (103, 104) configured to supply electrical power to the front and rear electric drivetrains (101, 102), a first regenerative braking system configured to generate electrical power for charging the first battery, and a second regenerative braking system configured to generate electrical power for charging the second battery, the battery management apparatus comprising: power distribution means for controlling a flow of electrical power between the first and second batteries (103, 104) and the front and rear electric drivetrains (101, 102); voltage monitoring means for monitoring an output voltage of the first battery and an output voltage of the second battery; and battery control means for controlling the power distribution means to electrically connect the first and second batteries (103, 104) in parallel to supply electrical power to both the front and rear electric drivetrains (101, 102) in response to a difference between the output voltages of the first and second batteries (103, 104) being less than a threshold, and to separately connect the first battery to the rear electric drivetrain and the second battery to the front electric drivetrain in response to the difference between the output voltages being greater than the threshold, wherein in response to the difference between the output voltages of the first and second batteries (103, 104) being greater than the threshold, the battery control means is configured to change a relative amount of electrical power generated by the first and second regenerative braking systems (108a, 108b) so as to supply more electrical power to the one of the first and second batteries (103, 104) having the lower output voltage, without substantially changing the total amount of electrical power generated by the first and second regenerative braking systems (108a, 108b) under braking of the electric vehicle. power distribution means for controlling a flow of electrical power between the first and second batteries (103, 104) and the front and rear electric drivetrains (101, 102); voltage monitoring means for monitoring an output voltage of the first battery and an output voltage of the second battery; and battery control means for controlling the power distribution means to electrically connect the first and second batteries (103, 104) in parallel to supply electrical power to both the front and rear electric drivetrains (101, 102) in response to a difference between the output voltages of the first and second batteries (103, 104) being less than a threshold, and to separately connect the first battery to the rear electric drivetrain and the second battery to the front electric drivetrain in response to the difference between the output voltages being greater than the threshold, wherein in response to the difference between the output voltages of the first and second batteries (103, 104) being greater than the threshold, the battery control means is configured to change a relative amount of electrical power generated by the first and second regenerative braking systems (108a, 108b) so as to supply more electrical power to the one of the first and second batteries (103, 104) having the lower output voltage, without substantially changing the total amount of electrical power generated by the first and second regenerative braking systems (108a, 108b) under braking of the electric vehicle.