Non-selective voltage-gated ion channel that mediates the transport of anions and cations through the mitochondrion outer membrane and plasma membrane (PubMed:31935282). Forms a high-conducting channel with a stable open state and a voltage-induced closure with a mild preference for anions over cations (PubMed:31935282). Involved in male fertility and sperm mitochondrial sheath formation (By similarity). {ECO:0000250|UniProtKB:Q60931, ECO:0000269|PubMed:31935282}. This is the function of VDAC3 (voltage dependent anion channel 3, ENSG00000078668).