Kastar Replacement Battery NP-FV50 for Sony NP-FV30 FV50 NP-FV40 NP-FV70 NP-FV100 and Sony Handycam HDR-CX580V 760V HDR-PJ540 650V HDR-PV790V HDR-TD30V FDR-AX100 DCR-SR DCR-SX HDR-CX Camcorders (Sony Dcr Sx45 Battery)