Predicted to enable identical protein binding activity; lithium:proton antiporter activity; and sodium:proton antiporter activity. Involved in clathrin-dependent endocytosis; flagellated sperm motility; and regulation of insulin secretion involved in cellular response to glucose stimulus. Acts upstream of or within positive regulation of osteoclast development. Located in basolateral plasma membrane; cytoplasmic vesicle membrane; and sperm principal piece. Is expressed in alimentary system; brain; femur; male reproductive gland or organ; and mesenteric adipose tissue. Orthologous to human SLC9B2 (solute carrier family 9 member B2). [provided by Alliance of Genome Resources, Apr 2022]