Table of contents
- Quick overview
- Best use case: Where it shines
- Top features and benefits
- What’s included
- Key technical specs
Quick overview
The Uni-T UT677A is designed to measure internal resistance, voltage, and temperature in lead-acid and lithium batteries. With reliable readings and fast data display, it's ideal for battery health checks in production, maintenance, or field diagnostics.
Best use case: Where it shines
This tester is perfect for workshops, tech labs, and electricians needing quick, trustworthy insights into battery and capacitor condition. Also great for equipment installers and mobile technicians.
Top features and benefits
- ✅ Measures internal resistance from 0.000mΩ to 3.000Ω
- ✅ Voltage testing range from 0.000V to ±71.00V
- ✅ Temperature monitoring from -10.0℃ to 60.0℃
- ✅ 4-terminal AC test avoids contact resistance issues
- ✅ Fast response time: 200ms
- ✅ Stores up to 5000 test results with USB export
- ✅ Built-in Bluetooth app support (Android) for real-time display
- ✅ Judgment function: PASS, WARNING, or FAIL indicators
- ✅ Compact with a 3.5" colour screen for clear readings
What’s included
- ✅ Uni-T UT677A instrument
- ✅ English manual
- ✅ 12-month warranty
Key technical specs
- ✅ Internal resistance resolution: as low as 1μΩ
- ✅ Voltage resolution: 1mV
- ✅ Temperature resolution: 0.1℃
- ✅ Measuring current: 2.0mA–200mA
- ✅ Battery: 3.7V lithium, rechargeable
- ✅ Battery life: approx. 500 measurements per charge
- ✅ USB interface for PC software
- ✅ Automatic shutdown after 15 minutes of inactivity
- ✅ Dimensions: 190mm × 121mm × 51mm
- ✅ Weight: 480g (including battery)
- ✅ Certified to IEC 61010 safety standards