Battery Internal Resistance Tester UNI-T UT677C

This product comes with a 3-year warranty.

UT677C Internal Resistance Tester. A device for assessing the condition of rechargeable batteries, including lead-acid and lithium batteries, by measuring their internal resistance and voltage. Using the four-pole alternating current method, it accurately measures internal resistance without interference from wire resistance. Functions include data storage, retrieval, alarms, automatic shutdown and strong anti-interference protection, making it indispensable for battery manufacturing, installation and maintenance.


Product parameters:

- Battery internal resistance: 0-3? (4 ranges; 1µ?);
- Voltage (UT677C): 0-120V
- Manual and automatic measurement
- Support PC software and Bluetooth application
- Rechargeable lithium battery: 2600mAh
- Automatic shutdown and low battery indication
- Fast response (200ms); test time: 2s
- data storage (500 settings)
- CE certification


Technical parameters:

- battery internal resistance
0.000m?~3 m? / ±1 % fs. ±20 dgt 1 µ ?
3.000m?~30 m? / ±0.5 % fs. ±15 dgt 10 µ?
3.000m?~300 m? / ±0.5 % fs. ±15 dgt 100 µ?
300m?~3 ? / ±0.5 % fs. ±15 dgt 1m?

- battery voltage range:
0.000V~±7 V / ±0.2 % fs. ±10 dgt. 1 mV
7 V~100.00V/ ±0.2 % fs. ±10 dgt 10 mV
100V~120.00V/ ±0.2 % fs. ±10 dgt 100 mV

- Battery internal resistance measurement
- Battery voltage measurement
- Battery types: lead-acid batteries, lithium batteries and other types of batteries
- Measurement methods Internal resistance:
1kHz AC 4-pole test method;
open circuit voltage: max. 3V
test current: 2.0mA~200mA (Different ranges correspond to different test currents.)
refresh rate: 5 times/s

- anti-interference: yes, automatic frequency tuning: 920Hz~1080Hz
- power supply: DC 11.1V lithium battery 2600mAh
- maximum input voltage: DC 120V (between positive and negative sides)
- response time: 200ms
- display: 3.5” (color display 480*320)
- dimensions: 170 × 115 × 65 mm (L*W*H)
- data interface: Type C, save test data and upload to PC
- bluetooth
- Data hold: automatic / manual data storage
- data storage: 500 settings
- measurement evaluation function: threshold values ??can be preset for PASS, WARNING, FAIL evaluation
- low battery indication: YES, 5 battery charge levels
- automatic shutdown: YES, approximately 15 minutes
- weight: 674.0 g (including batteries)
- guaranteed accuracy temperature, humidity: 23 °C ± 5 °C, < 75% relative humidity