A battery connector (1) comprises a dielectric housing (2) and a first conductive contact (4). The dielectric housing (2) comprises a cylindrical receiving cavity, a base (20), holding means (24) formed toward an upper section of the receiving cavity for engaging with the top face of the accommodated battery (5) to prevent the battery (5) from coming off, and a pair of spring strengtheners (22) extending upwardly from said base (20) for abutting a bottom face of the accommodated battery (5). The first conductive contact (4) comprises a first retaining section (40) secured in said dielectric housing (2) at a peripheral area of said base (20), a spring arm (42) inclining upwardly from said retaining section (40). The spring arm (42) extends between said pair of spring strengtheners (22), and the distal end of said spring arm (42) is free.