CST-D2 Series instruments for cylindrical cells
Analyze an entire shipping box of one hundred 21700 cells in a single scan cycle with the CST-D2. Also available for 18650, 26650 or 4680 cells. All configurations are built around the precision electronics that achieve up to 10MΩ self-discharge sensitivity in a 12-hour scan cycle.
Features
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CST-D2 instruments for 18650 and 21700 cells pack 100 channels into a compact benchtop unit. The cell holders are arranged in a 10×10 array, as in a typical 18650 shipping box, streamlining workflow and simplifying cell identification.
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Faster, better self-discharge screening with megaohm-range sensitivity at throughputs of 2 to 3 scan cycles per day.
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The CST-D2 series of instruments uses a single USB-B port for both power and communications. Simply install the SensLi software on your PC, connect the CST-D2 to a USB port, and you’re ready to scan. A single PC can support up to five CST-D2 instruments concurrently.
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Equilibration and scan times are easily configured to optimize the scan cycle for your workflow using the SensLi software. Scan output files—including metadata, CST grade and OCV for each cell under test, as well as the raw CST scan data—are text-based for straightforward integration with existing data management systems.
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The last four channels on CST-D2 instruments are equipped with surrogate self-discharge resistances that can be independently switched to 100kΩ, 200kΩ, 500kΩ, 1MΩ, or disabled. This facilitates the collection of reference data to establish the relationship between self-discharge and CST grade for a given cell type and state-of-charge (SoC).
Screenshot of SensLi control interface (click to expand)
Screenshot of typical SensLi results with reference resistances enabled (click to expand)
Specifications
| Model | CST100DR7-D2-18650 | CST100DR7-D2-21700 | CST64DR7-D2-26650 | CST25DR3-D2-4680 |
|---|---|---|---|---|
| Cell form factor | 18650 | 21700 | 26650 | 4680 |
| Number of channels | 100 | 100 | 64 | 25 |
| Dimensions | 22"W × 21"D × 12"H | |||
| Weight | 80 lb. | |||
| Self-discharge sensitivity | Up to 10 MΩ in a 12 hour scan cycle | |||
| Power and communication | USB-B; typical current draw 200 mA | |||
| Software | Runs on user-supplied Windows PC; control up to 5 CST-D2 instruments from one PC | |||
- Cell form factor
- 18650
- Channels
- 100
- Cell form factor
- 21700
- Channels
- 100
- Cell form factor
- 26650
- Channels
- 64
- Cell form factor
- 4680
- Channels
- 25
- Dimensions
- 22"W × 21"D × 12"H
- Weight
- 80 lb.
- Self-discharge sensitivity
- Up to 10 MΩ in a 12 hour scan cycle
- Power and communication
- USB-B; typical current draw 200 mA
- Software
- Runs on user-supplied Windows PC; control up to 5 CST-D2 instruments from one PC

