that the low voltage battery 16 will be charged with a current whose magnitude is approximately equal to the difference between the threshold current limit of the battery charger 12 and that defined by the traction battery charge profile hence the battery charger 12 may not permit uncontrolled current flow up to the threshold limit of the battery charger 12 to the low voltage battery 16 to satisfy the low voltage set point rather the battery charger 12 may control the current flow to the low voltage battery 16 during the ramp up and ramp down portions of traction battery charging the battery charger 12 may also control the current flow to the low voltage battery 16 during the maximum charge period if the current limit of the traction battery 14 is less than the current limit of the battery charger 12 according to the difference between the current limits as an example if the threshold current limit of the battery charger 12 is equal to 11 amps and at a particular time the magnitude of current associated with the ramp up portion of the traction battery charge profile is equal to 4 amps then the current available to charge the low voltage battery 16 at that time is equal to 7 amps the current available for charging the low voltage battery 16 may similarly be determined for all.