UNI-T Battery Internal Resistance Tester, 3 Ω, 70 V – UT677A+
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138.664 Ft
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The UNI-T UT677A+ measures rechargeable battery internal resistance from 0.000 mΩ to 3 Ω and DC voltage up to 70 V using a 1 kHz four-terminal method. It is designed for battery production, installation, maintenance and condition assessment in power, telecommunications and backup-power systems.
Key Features
- Dual Measurement – Measures battery internal resistance and DC voltage simultaneously.
- High-Resolution Testing – Covers 0.000 mΩ to 3 Ω with resolution down to 1 μΩ.
- Interference Reduction – Automatically adjusts the test frequency from 920 Hz to 1080 Hz.
- Battery Classification – Configurable PASS, WARNING and FAIL thresholds support rapid condition assessment.
- Data Management – Stores up to 5,000 records and supports USB Type-C and Bluetooth communication.
Product Specifications
| Product Type | Battery Internal Resistance Tester |
|---|---|
| Measurement Method | 1 kHz AC four-terminal method |
| Internal Resistance Range | 0.000 mΩ to 3 Ω |
| DC Voltage Range | 0 to ±70 V |
| Test Current | 2 mA to 200 mA, depending on range |
| Open-Circuit Terminal Voltage | Maximum 3 V |
| Measurement Rate | 5 readings per second |
| Response Time | Approximately 200 ms |
| Automatic Test Frequency | 920 Hz to 1080 Hz |
| Display | 3.5-inch colour LCD, 480 × 320 pixels |
| Data Storage | 5,000 records across 10 memory banks |
| Communication | USB Type-C and Bluetooth for Android devices |
| Judgement Function | PASS, WARNING and FAIL thresholds |
| Power Supply | 11.1 V, 2600 mAh rechargeable lithium battery |
| Auto Power-Off | Approximately 15 minutes; function can be disabled |
| Operating Conditions | -10°C to 40°C, ≤80% RH |
| Storage Conditions | -20°C to 60°C, ≤70% RH |
| Dimensions | 170 × 115 × 65 mm |
| Weight | Approximately 674 g, including battery |
| Compliance | IEC 61010, CE |
Measurement Specifications
| Measurement | Range | Resolution | Accuracy |
|---|---|---|---|
| Internal Resistance | 0 to 3 mΩ | 1 μΩ | ±(1% FS + 20 digits) |
| 3 to 30 mΩ | 10 μΩ | ±(0.5% FS + 15 digits) | |
| 30 to 300 mΩ | 100 μΩ | ±(0.5% FS + 15 digits) | |
| 300 mΩ to 3 Ω | 1 mΩ | ±(0.5% FS + 15 digits) | |
| DC Voltage | 0 to ±7 V | 1 mV | ±(0.2% FS + 10 digits) |
| ±7 to ±70 V | 10 mV | ±(0.2% FS + 10 digits) |
Applications
- Rechargeable battery production and quality inspection
- UPS and backup battery maintenance
- Telecommunications and power-system battery inspection
- Lead-acid and lithium battery condition assessment
Included Components
- UT677A+ battery internal resistance tester
- UT-L95 four-terminal clip test lead
24-Month Product Warranty
Consumer purchases of this product include a 24-month PERIPLUS commercial product warranty from the date of delivery. This warranty is additional to, and does not limit, any mandatory statutory consumer rights.