Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: vitamin B12(out) + ATP + H2O = ADP + an vitamin B12(in) + H+ + phosphate. Vitamin B12 is alkylcob(III)alamin.
EC:7.6.2.8; MetaCyc:3.6.3.33-RXN; RHEA:17873; Reactome:R-HSA-3095901 "ABCC1 transports cytosolic RCbl to extracellular region"; Reactome:R-HSA-5223313 "ABCD4:LMBRD1 transports RCbl from lysosomal lumen to cytosol (gut mucosal cells)"; Reactome:R-HSA-5683325 "Defective ABCD4:LMBRD1 does not transport Cbl from lysosomal lumen to cytosol"; Reactome:R-HSA-9759206 "ABCD4:LMBRD1 transports RCbl from lysosomal lumen to cytosol"