Battery internal resistance tester is a device used to measure the internal resistance of lithium-ion batteries. Battery internal resistance is an important parameter that affects the performance of the battery such as efficiency, capacity and life time. 3.7V battery internal resistance tester is widely used in battery internal resistance testing, battery module testing, battery R&D measurement, high voltage battery pack testing, high speed mass production line testing of lithium batteries, lead-acid batteries, button batteries and so on.
Features:
- PC software: Read real-time battery internal resistance tester value, read battery internal resistance tester history, synchronize computer time to battery internal resistance tester and so on.
- Voltage measurement: The internal battery resistance tester can also be used as a DC voltmeter, just connect the two red and black interfaces in the center to measure. DC voltage, pay attention not to measure AC voltage, as well as DC voltage does not exceed 70V.
- Temperature measurement: Insert the temperature sensor into the TEMP.SEN-SOR interface, the display interface can show the current ambient temperature, but not connected to the sensor is not displayed.
- 5000 groups of data storage: battery resistance tester can be set up internally to save, storage mode, memory selection, a total of ABCDEFGHIJ ten storage options, such as the current memory has been stored in the memory full of 500 groups of data, the storage of data prompts the memory is full (full symbol), you need to manually set up other memories or delete the data in the current memory in order to store the new measurement data.
Specification:
Model |
T-BRT-UT677A |
Power supply |
DC 3.7V lithium battery |
Precision guaranteed temperature and humidity |
23°C±5°C, below 75%rh |
Resistance resolution |
1 uΩ |
Voltage resolution |
1 mV |
Temperature resolution |
0.1℃ |
Measuring range |
Internal resistance measurement: 0.000mQ~3.100Q (4 ranges) Voltage measurement: 0.000V~71.00V (2 ranges) Temperature measurement: -10.0° C ~ 60.0° C (single range) |
Maximum input voltage |
DC 70V (between +measurement terminal and -measurement terminal), no AC input |
Measurement method |
Internal resistance measurement: 1KHz AC 4-terminal test method, open terminal voltage 3Vmax Measuring current: 2.0mA~200mA (different measuring current for different ranges) Temperature measurement: NTC temperature sensor (10KQ at 26C) A/D conversion method: successive approximation type Display update frequency: 5 times /second |
Response time |
200ms |
Measurement time |
Approx 2 seconds |
LCD size |
70.1mm*52.6mm/3.5 inch (320*240 resolution 16-bit true colour screen) |
Instrument size |
190mm*121mm*51mm |
USB connection |
With a USB interface, stored data can be uploaded to the computer, save,d and print |
Bluetooth connection |
Yes |
Hold and store function |
With manual hold and storage, automatic hold and storage |
Measurement judgment function |
PASS, WARNING, and FAIL judgment thresholds can be preset |
Battery voltage |
Battery level 5 grid display, battery voltage is low to ensure timely charging |
Automatic switch-off |
Power on without operation, about 15 minutes after the automatic shutdown (can be turned off in the settings) |
Power consumption |
300mA MIN/500mA MAX |
Weight |
480g(with battery) |
Working temperature and humidity |
-10°C~40℃; 80%RH or less |
Storage temperature and humidity |
-20°C~60°C; 70%RH or less |
Insulation resistance |
20MΩ or more (500V between circuit and case) |
Withstanding voltage |
AC 3700VIRMS (between circuit and case) |
External magnetic field |
<40A/m |
External electric field |
<1V/m |
Suitable for safety regulations |
IEC 61010 |
Package List:

Tips:What is an internal battery resistance tester?
Internal Battery Resistance Tester is a professional tool used to measure the internal resistance of a battery, which can help determine the health and performance performance of the battery.
Battery internal resistance is the resistance encountered when the current flows inside the battery (unit: milliohm/mΩ), which is determined by the electrode material, electrolyte, chemical reaction efficiency and other factors.
The higher the resistance value, the lower the output efficiency of the battery, which is manifested by a fast voltage drop and a weakened power supply capability (e.g., a sudden drop in range and difficulty in starting a car).