Groundnut shelling is a fundamental process in post-harvest management. Manual shelling is inefficient and laborious with low throughput. Motorised shellers experience less than 100% shelling efficiency and varying levels of kernel damage. From the research, throughput per unit power consumption and shelling efficiency increased with reduction in % moisture content (mc), with maximum outputs realized at 6%. Kernel mechanical damage decreased with increase in % mc up to a minimum at between 15% and 18% mc then increased marginally with further rise in mc. Meanwhile, throughput per unit power consumption increased with bulk density of the groundnut variety being shelled. In addition, kernel to pod diameter ratio had a significant influence on the outputs under study. All the three output parameters under review rose exponentially with increase in feed rate. Throughput per unit power consumption and shelling efficiency rose steadily with increase in shelling speed with the highest values obtained at a shelling speed of about 12 m/s. Kernel mechanical damage remained low (less than 4%) for speeds below 8 m/s, and then rose sharply with further increment in speed. All the output parameters increased with reduction in concave clearance with maximum values obtained at 10 mm clearance. Steel and rubber paddles yielded the highest throughput per unit power consumption. At low shelling speeds (less than 8 m/s), rolling rubber and steel pipes resulted in lowest shelling efficiency and kernel mechanical damage but at higher speeds they resulted into both highest shelling efficiency and kernel mechanical damage.