It is widely recognized that results from divertor models can be quite sensitive to the boundary conditions that are assumed at the divertor neutralizer plate. However, some past models assumed electron and ion heat transmission coefficients with little justification. In fact, energy and momentum fluxes from backscattered neutral deuterium and tritium atoms can significantly contribute to the energy and momentum balance of the divertor plasma and consequently affect the estimates of steady-state plasma conditions. In illustration of this point, a two-point model similar to that of Galambos and Peng is rederived, including momentum and energy sources from charge-exchange and a self-consistent fluid treatment of the sheath heat transmission coefficients. Divertor conditions associated with the International Tokamak Reactor (INTOR) and International Thermonuclear Experimental Reactor (ITER)-like fusion reactors are estimated, and the effects of including the backscattered fluxes are discussed.