Internal Resistance Testers
Grade cells by resistance alongside capacity for tighter matching.
View details →Battery Capacity Testers
Verify true battery capacity with coulomb-counting precision — from single-cell laboratory checks to 512-channel production grading.
Capacity Testing
Know Exactly What Your Cells Deliver
The VT-CT series measures discharge capacity, charge capacity, energy throughput and coulombic efficiency with 0.05% current accuracy. Combined with the VoltTest grading software, it automatically sorts cells into capacity bins for consistent battery pack performance.
- ✓ CC, CP and CR discharge modes for full characterisation
- ✓ Up to 512 channels in one cabinet for production grading
- ✓ 0.05% FS accuracy, 1 ms data acquisition
- ✓ Automatic binning, sorting and label printing
- ✓ Rechargeable regenerative discharge ≥90% efficiency
Models & Specifications
VT-CT Series Model Overview
| Model | Voltage Range | Current Range | Channels | Accuracy | Best For |
|---|---|---|---|---|---|
| VT-CT-5V10A | 0–5 V | 0.1 mA–10 A | 128 / 256 / 512 | ±0.05% FS | Cylindrical cell grading |
| VT-CT-5V30A | 0–5 V | 0.1 mA–30 A | 64 / 128 | ±0.05% FS | Prismatic & pouch grading |
| VT-CT-12V20A | 0–12 V | 0.1 mA–20 A | 64 | ±0.05% FS | Two-cell series testing |
| VT-CT-60V10A | 0–60 V | 0.05 A–10 A | 32 | ±0.1% FS | Lead-acid & NiMH batteries |
| VT-CT-LAB | 0–5 V | 0.1 mA–20 A | 8 | ±0.05% FS | Laboratory verification |
Every system ships calibrated with a traceable certificate and can be re-verified on site.
Key Features
Built for Grading Throughput
High Channel Density
512 channels per cabinet with individual current control and per-channel fault isolation.
0.05% Accuracy
Calibrated current sources guarantee repeatable capacity readings batch after batch.
Auto Binning
Programmable capacity windows sort cells into A/B/C grades with label output.
Energy Recovery
Regenerative discharge cuts electricity cost and reduces line heat load dramatically.
Traceability
Barcode-linked test records feed your MES — every cell's full history is retrievable.
Fast Setup
Hot-swappable trays and quick connectors minimise fixture change time between batches.
Multi-Chemistry
Programs for Li-ion, LiFePO4, NiMH, lead-acid and supercapacitor test procedures.
SPC Reporting
Statistical process control dashboards show capacity distribution in real time.
Applications
Battery Capacity Testing Applications
Wherever delivered capacity must be guaranteed, the VT-CT series is the battery testing equipment of record.
- ✓ Final capacity grading at lithium battery manufacturing plants
- ✓ Laboratory capacity verification per IEC 61960 / GB 31241
- ✓ Incoming acceptance testing for battery pack assemblers
- ✓ Used battery screening and second-life grading
- ✓ Research on new cell designs and formulations
Plan Your Grading Line
Share your annual output and cell format — we'll size the right capacity tester configuration.
Request a Quote →Free application consultation · 24-hour response
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Build the Full Grading Workflow
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Charge/Discharge Test Systems
Full cycling capability for R&D when you need more than capacity.
View details →Need Capacity Testers for Your Plant?
Get a configuration quotation with trays, software and installation — engineered for your throughput target.