UNI-T UT677A is a battery internal-resistance tester using a 1 kHz AC 4-terminal method to measure internal resistance (0–3 Ω) and voltage (±7 V) simultaneously — for evaluating lead-acid, lithium and UPS battery health. Bluetooth app and USB, with PASS/WARNING/FAIL judgement. Genuine UNI-T supplied by Digilog.pk with manual and warranty.
Key Features
- 1 kHz AC 4-terminal method; internal resistance 0–3 Ω, resolution to 1 µΩ
- Simultaneous DC voltage measurement ±7 V; NTC temperature measurement
- 3.5" 320×240 true-colour screen; ~2 s measurement, 5 readings/second
- PASS / WARNING / FAIL preset judgement thresholds
- Bluetooth app and USB; up to 5000-set data storage
- 3.7V Li-ion (rechargeable); IEC 61010, AC 3700V puncture test
Technical Specifications
| Resistance Range | 0–3 Ω |
|---|---|
| Resolution | 1 µΩ (lowest range) |
| Accuracy | ±0.5% fs (typ.) |
| Voltage Range | ±7 V |
| Method | 1 kHz AC 4-terminal |
| Screen | 3.5" 320×240 colour |
| Storage | 5000 sets |
| Interface | USB, Bluetooth |
| Power | 3.7V Li-ion (rechargeable) |
| Weight | 480 g |
What's in the Box
- UT677A battery internal resistance tester
- 4-terminal test leads
- USB cable
- Carrying bag
- English user manual
Downloads
Certifications: CE, RoHS | HS Code: 9030.39