NP530U4B Battery for Samsung 530U NP540U3C 530U4C 535U4C 535U4C-S02 laptop 45WH 7.4V 1000tvl 1 7 2 1 2 8 3 6 6 8 12 16mm m12 lens 650nm ir cut filter mini cmos 139 pcb cctv wide angle 2 8 12mm analog camera