A reusable two-electrode lithium battery test cell in which the positive and negative electrodes are separated by a separator, simulating coin-cell conditions without crimping. Connected to a battery cycler, it serves a wide range of tests such as cycle life, capacity and rate capability. An internal spring sets the load on the electrode–separator stack and keeps the electrodes in firm contact with the separator; because the same load is reproduced at every assembly, results are comparable between runs.
The body is high-purity titanium; the inner insulator is PEEK and the terminals are gold-plated copper. Chemically resistant O-rings and a screw-down lid keep the cell gas-tight, so it can be assembled in a glovebox and then tested outside. After testing, the cell is easily disassembled and cleaned without damaging the sample, so electrodes can be recovered for post-mortem analysis. The separator is supplied by the user.
| Electrode system | Two-electrode |
| Body material | High-purity titanium |
| Inner insulator | PEEK |
| Terminals | Gold-plated copper |
| Cell dimensions | Ø55 × 23 mm (manufacturer data) |
| Sample diameter | 20 mm |
| Sealing | O-ring |