Experiments involving electrochemical cells are of great pedagogical value for learners of introductory chemistry. This paper discusses an improved experimental kit made from a 24-well cell culture plate and a 3D-printed scaffold. The current design focuses not only on the accuracy of the result but also on the intuitiveness of the wiring work and measurement of the cell potential. Half-cells in this kit include metal ion|metal electrodes (Ag[superscript +]|Ag, Cu[superscript 2+]|Cu, Fe[superscript 2+]|Fe, Mg[superscript 2+]|Mg, Ni[superscript 2+]|Ni, Pb[superscript 2+]|Pb, Sn[superscript 2+]|Sn, and Zn[superscript 2+]|Zn) and gas electrodes (Cl-|Cl[subscript 2]|Pt, H[superscript +]|H[subscript 2]|Pt, and O[superscript 2-]|O[subscript 2]|Pt) as well as Br[superscript -]|Br[superscript 2]|Pt and I[superscript -]|I[superscript 2]|Pt. Cells are combined in a series circuit to light an LED or sound a buzzer. This kit can be used to enhance teaching and learning activities involving electrochemistry at the senior secondary school and first-year university levels.