The morphology and the electro-kinetic parameters of lead electrodeposits on polycrystalline lead have been studied in a fluoborate bath at several current densities in the presence of known concentrations of 2-mercaptoethanol. It was observed that there was a notable decrease in the grain-size at low concentrations of the addition agent and the critical concentration varied with the current density. The growth habit modification and the changes in the kinetic parameters with increasing concentrations of the addition agent and current density, were investigated. Suitable transport mechanisms were proposed with the help of IR and X-ray studies.