Gamry Instruments' 18650 (P/N 992-00112) and CR2032 (P/N 992-00113) battery holders allow measurements on single batteries or two cells in series.
Single-Cell Measurements
For single-cell measurements, the descriptions on the battery holder indicate connections.
Diagram showing a battery holder with terminals labeled WS, RE, WS1, RE1, WS2, RE2, WE1, CE1, WE2, CE2, illustrating connections for single-cell measurements. Arrows indicate terminal connections.
[Diagram: Battery holder terminals for single-cell measurements]
Series Measurements
For series measurements, a shorting bar is provided to connect both batteries. The figure on the right shows how to connect the cell leads of a potentiostat to the battery holder.
Diagram showing a battery holder with a shorting bar connecting CE1 and WE2 terminals for series measurements. Arrows indicate potentiostat lead connections: green to WE1, red to CE2, blue to WS1, white to RE2.
[Diagram: Battery holder with shorting bar for series measurements]
- Connect CE₁ and WE₂ of the battery holder with a shorting bar.
- Connect the working lead (green) of the potentiostat to WE₁ and the counter lead (red) to CE₂.
- Connect the working sense lead (blue) to WS₁ and the reference lead (white) to RE₂.
The shorting bar leads to an additional impedance in your system. EIS spectra can be corrected when measuring the impedance between CE₁ and WE₂ connected by a shorting bar. Afterwards, it can be easily subtracted from any EIS spectrum in the Echem Analyst™ software.
Other Potentiostats
The battery holders may be connected to potentiostats made by other manufacturers, but ensure that you follow the manufacturer's guidelines for connecting current-carrying cables (counter and working) as well as the sense leads (reference and working sense). Their color-coding of the cables may not follow our scheme.
