EN
GDBT-8614 Intelligent Battery Internal Resistance Tester
GDBT-8614 Digital Intelligent Battery Internal Resistance Tester with 1kHz AC Injection Method, 4-Terminal Kelvin Measurement, On-Line Test, for Lead-Acid Battery Health State Evaluation.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
GDBT-8614 is a professional high-precision portable battery internal resistance tester designed for quick health screening, fault early warning and performance evaluation of valve-regulated lead-acid (VRLA) battery packs in substations, power plants, communication base stations, UPS systems and data centers. It strictly complies with DL/T 1397.5-2014, DL/T 724-2000 and IEC 60896-2:2008 standards, adopting advanced 1kHz AC injection method and four-terminal Kelvin measurement technology that effectively eliminates lead resistance interference and ensures accurate measurement results.
The instrument features industry-leading on-line test technology, allowing testing of batteries directly in floating charge state without disassembly and without affecting the normal operation of the entire battery system. Its built-in intelligent health state evaluation algorithm automatically compares the measured internal resistance with the reference value and judges the battery health state (excellent/good/poor/faulty). The 4.3-inch high-definition color touch screen provides intuitive operation and real-time display of internal resistance, voltage, health state and test time.
Specifications
| Parameter | Specification |
|---|---|
| Compliance Standards | DL/T 1397.5-2014, DL/T 724-2000, IEC 60896-2:2008, IEEE 1188-2005 |
| Test Principle | 1kHz AC injection method |
| Measurement Method | Four-terminal Kelvin measurement |
| Supported Cell Voltages | 2V, 6V, 12V (automatic recognition) |
| Internal Resistance Range | 0.000mΩ ~ 100.00mΩ |
| Internal Resistance Resolution | 0.001mΩ |
| Internal Resistance Accuracy | ±2% FS |
| Voltage Measurement Range | 0.000V ~ 16.000V |
| Voltage Resolution | 0.001V |
| Voltage Accuracy | ±0.5% FS |
| Temperature Measurement Range | -10℃ ~ +60℃ |
| Temperature Accuracy | ±1℃ |
| Connection Resistance Measurement | Yes |
| Health State Evaluation | Yes (excellent/good/poor/faulty) |
| Temperature Compensation | Yes (automatic compensation to 25℃) |
| On-Line Test | Yes (floating charge state, no disassembly required) |
| Display | 4.3-inch 480×272 color capacitive touch screen |
| Language Support | Chinese / English bilingual |
| Data Storage | 1000 groups (with time stamp, ID, resistance, voltage, temperature, health state) |
| Communication Interface | USB 2.0 (U-disk export) |
| Power Supply | Built-in 7.4V/5200mAh lithium battery; AC 220V charging |
| Battery Life | ≥8 hours continuous working time |
| Charging Time | ≤4 hours |
| Protection Grade | IP54 (waterproof and dustproof) |
| Operating Temperature | -10℃ ~ +50℃ |
| Humidity | ≤85% RH (non-condensing) |
| Dimensions (L×W×H) | 190×120×50mm |
| Weight | ~1.2kg (including battery) |
| Enclosure | ABS+PC engineering plastic with rubber protective cover |
Applications
Core Test Objects
- Single lead-acid cells: 2V, 6V, 12V valve-regulated lead-acid (VRLA) cells (AGM, gel)
- Battery packs: 48V, 110V, 220V series-connected battery packs
- Application systems: Substation DC systems, communication base station power systems, UPS systems, data center backup power, renewable energy storage systems
Typical Usage Scenarios
- Power companies: Substation battery pack routine patrol inspection, lagging cell identification and fault early warning
- Telecom operators: Communication base station battery pack regular inspection and performance evaluation
- Data centers: UPS battery pack health screening and life prediction
- Battery manufacturers: Factory quality control, battery performance test and grading
- Third-party testing institutions: Battery system certification testing, safety assessment and on-site calibration services
Advantages
Compliance with Latest Industry Standards
Fully meets DL/T 1397.5-2014, DL/T 724-2000, IEC 60896-2:2008 → test results are globally recognized
Industry-Leading On-Line Test Technology
Tests batteries directly in floating charge state without disassembly → reduces test time by 90% and avoids system downtime risks
0.001mΩ Ultra-High Resolution
Accurately captures subtle changes in battery internal resistance → identifies early hidden faults before they cause failures
Intelligent Health State Evaluation
Automatically judges battery health state and provides maintenance suggestions → eliminates the need for professional analysts, reduces operator skill requirements
Comprehensive Data Management & Trend Analysis
1000-group data storage, USB export and PC analysis software → facilitates digital management of battery maintenance data and life prediction
FAQ
Q: What is the relationship between battery internal resistance and capacity?
A: Battery internal resistance is the most reliable indicator for evaluating battery health state. As the battery ages, lead sulfate crystals form on the plates, leading to increased internal resistance. A large number of experiments have shown that:
- When internal resistance increases by less than 20% compared to the initial value: Battery is in good condition
- When internal resistance increases by 20%~50%: Battery performance is degraded, needs attention
- When internal resistance increases by more than 50%: Battery capacity has dropped below 80% of the rated value, should be replaced
GDBT-8614 automatically compares the measured internal resistance with the reference value and provides objective health state evaluation.
Q: What is the advantage of AC injection method compared to DC discharge method?
A: Traditional DC discharge method has many disadvantages:
- Requires disconnecting the battery from the system, affecting normal operation
- Large current discharge is dangerous and time-consuming
- Damages battery life due to deep discharge
- Can only test the entire battery pack, cannot test single cells
AC injection method used by GDBT-8614 has the following advantages:
- Non-destructive test, no impact on battery performance and life
- On-line test without disassembly, no impact on system operation
- Fast test speed (≤2 seconds per cell)
- Accurate measurement of single cell internal resistance, identifies lagging cells
Q: Can GDBT-8614 test batteries in floating charge state?
A: Yes. GDBT-8614 adopts advanced digital filtering technology that effectively eliminates the influence of floating charge voltage and ripple current. It can accurately measure the internal resistance of batteries directly in floating charge state without disassembly, which is ideal for on-site patrol inspection.
