A battery connector includes an insulating housing, a plurality of contacts engaged into the insulating housing along a vertical direction and a pair board lock engaged into the insulating housing along a horizontal direction. The insulating housing includes a plurality of contact slits defined at a front surface thereof, extended towards a rear surface thereof and penetrated a bottom surface thereof, and a pair of fixing slits defined at the rear surface and penetrated the bottom surface. Each contact includes a contact plate protruded from the front surface and a soldering leg protruded from the bottom surface. Each board lock includes a pair of locking legs protruded from the bottom surface. Because the contacts and the board locks are engaged with the insulating housing along two directions to improve the strength of the battery connector to against a lateral force applied on the contacts.