The possibility of fusion/fission chain reactions following d-d source reactions in electrochemical “cold fusion” experiments has been investigated. The recycling factors for the charged particles in fusion reactions with consumable nuclei deuteron, 6Li and 7Li, are estimated. It is concluded that, based on the established nuclear fusion cross sections and electronic stopping power, the recycling factor is four to five orders of magnitude less than required for close to critical conditions. It is argued that the cross generation of charged particles by neutrons does not play a significant role in this process, even if increased densities at the surface of electrodes do occur.