Enables electron transfer activity and short-branched-chain-acyl-CoA dehydrogenase activity. Acts upstream of or within acyl-CoA metabolic process. Predicted to be located in mitochondrial matrix. Predicted to be active in mitochondrion. Orthologous to human ACADSB (acyl-CoA dehydrogenase short/branched chain). [provided by Alliance of Genome Resources, Apr 2022]