UT677A+ Battery internal resistance tester

Designed for rechargeable lead-acid and lithium batteries for:
- measuring internal resistance 0 ~ 3 Ohm ±0.5%
- voltage 0 ~ 71 V ±0.2%
- temperature -10 ~ 60°C ±1℃
- assessing their condition by PASS, WARNING, FAIL parameters
- measuring ESR parameters of electrolytic capacitors
Accuracy guaranteed at 23℃±5℃ and humidity <75%

Uses an AC testing method with 4 terminals to measure battery internal resistance, which can measure the correct measurement value without the influence of contact resistance between the test lead, terminal and battery electrode

1. Internal resistance measurement by 1 kHz AC testing method with 4 terminals, open-circuit terminal voltage 3 V max.
2. Measuring current 2.0 mA ~ 200 mA (different measuring currents in different ranges)
3. Temperature measurement by NTC sensor (10 kOhm at 26 °C)
4. Analogue-to-digital conversion method: successive approximation type
5. Display update rate 5 times per second

3.5-inch screen 320*240, 16-bit colour
5-segment charge indicator
Measuring time about 2 seconds
USB interface: real-time reading of measurement values, reading of historical measurement records
Bluetooth connection
Manual and automatic hold and storage of up to 5000 measurement data sets
Adjustable threshold values for assessing the condition of tested batteries "PASS", "WARNING", "FAIL"

Power supply: 3.7 V DC lithium battery
Auto power-off after 15 minutes
Insulation resistance more than 20 MOhm (500 V between circuit and housing)
Dielectric strength test AC 3700 V/rms (between circuit and housing)

Verification is not included in the price Why?
Warranty for manufacturing defects, including measurement accuracy and successful passing of Uzstandart metrological verification: 12 months