Professional Battery Capacity & Internal Resistance (ACIR/DCIR) Testing Solutions (12V to 72V)
GEB manufactures laboratory-grade battery capacity testers, internal resistance meters, and programmable battery pack analyzers engineered for battery pack assemblers, QC inspection departments, e-mobility service repair centers, and energy storage maintenance contractors. Supporting wide operating voltage ranges from 12V up to 72V (up to 85V open circuit) and constant-current discharge loads up to 30.0 Amperes, GEB testing instruments deliver quantifiable verification of true pack capacity (Ah/Wh) and health degradation (SoH).
Equipped with 4-wire Kelvin test fixtures that eliminate cable contact resistance, high-precision 1kHz AC internal resistance measurement, and USB PC connectivity for automated discharge curve plotting and CSV report exports, our testers eliminate counterfeit cell risks and streamline battery warranty auditing.
Testing Methodology: Handheld Fast IR Meter vs. Programmable Capacity Discharger
Industrial battery quality assurance requires distinct testing instruments depending on the diagnostic task:
| Diagnostic Parameter | Handheld 1kHz AC Milliohm Meter | GEB Programmable Battery Capacity Tester (BT-72) |
|---|---|---|
| Primary Measurement Target | Instant AC internal impedance (ACIR @ 1kHz) & OCV | True real-world discharge capacity (Ah/Wh), DCIR, cutoff voltage |
| Testing Duration | Instantaneous (< 1 second per cell) | Full discharge duration (30 minutes to 5+ hours) |
| Testing Principle | 1kHz small AC signal perturbation | Electronic load constant-current (CC) / constant-power (CP) sink |
| Test Fixture Connection | Dual needle Kelvin probes | Heavy-duty copper 4-wire Kelvin clamps with sense leads |
| Primary Production Role | Incoming raw cell inspection (IQC) & cell sorting | Final pack capacity validation (OQC), R&D burn-in & repair warranty |
GEB Standard Battery Tester Selection Matrix
| Model | Voltage Test Range | Discharge Current | Max Discharge Power | Measurement Precision | Display / Interface | Data Logging | Application |
|---|---|---|---|---|---|---|---|
| GEB BT-72 Smart | 12V – 72V DC (Max 85V) | 0.5A – 30.0A (Adjustable) | 800W continuous | Voltage ±0.2%, Current ±0.5% | Multi-parameter LCD Screen | USB PC Software Link | E-bike, e-scooter, solar & AGV battery pack testing |
| GEB BT-100 Industrial | 0.5V – 100V DC | 0.1A – 50.0A | 1,500W | Voltage ±0.1%, Current ±0.2% | Color Touchscreen Display | RS485 / LAN / USB | Industrial ESS, telecom UPS & EV pack certification |
| GEB IR-1000 ACIR Meter | 0.001V – 60V DC | 1kHz AC Test Signal | N/A (Impedance Meter) | Resistance ±0.5% (0.01mΩ res) | Handheld Backlit LCD | Internal 500-group Memory | Incoming cell sorting (18650, 21700, Prismatic) |
Four-Wire Kelvin Sensing, Precision Current Sinks & Thermal Protection
Accurately measuring battery capacity requires isolating test fixture wire resistance from the actual cell potential. GEB instruments guarantee rigorous measurement integrity:
- True 4-Wire Kelvin Architecture: Separate high-current power path lines and high-impedance voltage sensing lines prevent line voltage drops from skewing cutoff thresholds.
- Linear MOSFET Power Sink Matrix: Precision closed-loop DAC controlled MOSFET bank capable of holding constant current within ±0.5% from full charge down to cutoff.
- Programmable Cutoff Parameters: Configurable voltage cutoff, capacity limit, discharge time ceiling, and negative temperature cutoff triggers.
- Overload & Thermal Safety Suite: High-efficiency copper heat-pipe tower heatsinks with dual high-CFM fans, auto-shutting off if internal heat-sink temperatures exceed 80°C.
OEM / ODM Testing Instrument Customization
GEB offers branded hardware and customized PC software solutions for equipment resellers and battery franchise operations:
- Custom Voltage & Current Ratings: Custom test banks engineered up to 150V and 100A for electric motorcycle and industrial forklift battery packs.
- Branded PC Software & Test Certificates: White-label Windows software generating automated PDF/Excel battery health certificates branded with customer logos.
- Custom Test Cable Jigs: XT60, Anderson, aviation plug, and custom spring-loaded terminal clamp harnesses.
Quality Verification, Calibration & Global Shipping
Each GEB battery testing instrument is individually calibrated against certified Fluke reference multimeters prior to packaging. Fully compliant with CE, FCC, and RoHS electromagnetic compatibility regulations. Shipped with standard international non-DG air and express logistics.
