d_batt 21[mm] "Battery diameter" h_batt 70[mm] "Battery height" d_term 6[mm] "Terminal diameter" h_term 1[mm] "Terminal thickness" w_sc 3[mm] "Serial connector width" h_sc 1[mm] "Serial connector height" h_pc 0.5[mm] "Parallel connector height" w_pc 1[mm] "Parallel connector width" h_holder 10[mm] "Holder height" gap 2[mm] "Gap between battery cylinders" nx_batt 5 "Number of batteries in x direction" ny_batt 4 "Number of batteries in y direction" n_batt nx_batt*ny_batt "Number of batteries" r_batt d_batt/2 "Battery radius" r_term d_term/2 "Terminal radius" x_disp d_batt+gap "x displacement for serially connected batteries" y_disp x_disp*tan(60[deg])/2 "y displacement for batteries connected in parallel" x_offset (d_batt+gap)/2 "x displacement for batteries connected in parallel"