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UT677A Battery Internal Resistance Tester

UT677A Battery Internal Resistance Tester
UT677A Battery Internal Resistance Tester
UT677A Battery Internal Resistance Tester
UT677A Battery Internal Resistance Tester
UT677A Battery Internal Resistance Tester
UT677A Battery Internal Resistance Tester
UT677A Battery Internal Resistance Tester
UT677A Battery Internal Resistance Tester
UT677A Battery Internal Resistance Tester
  • Stock: In Stock
  • Model: UT677A


The battery internal resistance tester is a measuring instrument used to measure the internal resistance, voltage, and temperature of rechargeable

batteries such as lead-acid batteries and lithium batteries to judge the health status of the battery.

It can also be used as an instrument to measure the ESR parameters of electrolytic capacitors. UT677A uses the AC 4-terminal test method to

measure the internal resistance of the battery, which can measure the correct measurement value without being affected by the contact resistance

between the test lead, the terminal, and the battery electrode.

The whole machine is high-grade and beautiful, with a wide range, high resolution, convenient operation, convenient carrying, accurate, reliable,

stable performance, and strong anti-interference ability. It is an indispensable instrument for battery production, battery installation, equipment

production, equipment maintenance, and other scenarios.


Features of UT677A Battery Internal Resistance Tester:

● Internal resistance test: 0.000mΩ~3.100 Ω

● Voltage test: 0.000V~±71.00V

● Temperature test: -10.0℃~60.0℃

● PC software supported

● Fast response: ≤200ms

● Measurement result judgment function

● 5000 pieces of data storage & rechargeable lithium battery

● Bluetooth APP (Android) supported


Specifications of UT677A Battery Internal Resistance Tester:


Function Range Resolution
Battery Internal resistance range 0.000mΩ~3mΩ / ±1%fs. ±20dgt 1uΩ
3.000mΩ~30mΩ / ±0.5%fs. ±15dgt. 10uΩ
3.000mΩ~300mΩ / ±0.5%fs. ±15dgt. 100uΩ
300mΩ~3Ω /±0.5% fs. ±15dgt. 100mΩ
Battery Voltage range 0.000V~±7 V/±0.2%fs. ±10dgt. 1mV
7 V~±71.00V/±0.2 % fs. ±10dgt.
Temperature range -10.0°C~60.0°C (single range)/ ±1.0℃ 0.1℃
Accuracy Guaranteed Temperature Humidity 23℃±5℃,  <75%rh  
Measuring method 1. Internal resistance measurement: 1KHz AC 4-terminal test method, open-circuit terminal voltage 3V max
2. Measuring current: 2.0mA~200mA (different measuring currents in different ranges)
3. Temperature measurement: NTC temperature sensor (10KΩ at 26°C)
4. A/D conversion method: successive approximation type
5. Display update frequency:  5 times/second
Screen 3.5 inches (320*240, 16-bit true color screen)
Response time 200ms
Measuring time About 2 sec
USB interface Read real-time measurement values, read historical measurement records
Bluethooth app
Data hold and storage 1. Manual hold and storage, automatic hold and storage
2. Up to 5000 set measurement data storage
Measurement judgment function PASS, WARNING, FAIL judgment thresholds can be preset
Power 1. DC 3.7V lithium battery
2. 5-bar display of power, reminding to charge in time
Power consumption 300mA MIN/500mA MAX
Automatic shut-down Around 15 minutes
Weight 480g (including battery)
Dimension 190mm×121mm×51mm (L*W*H)
Working temperature and humidity -10℃~40℃; below 80%RH
Storage temperature and humidity -20℃~60℃; below 70%RH
Insulation resistance Above 20MΩ (500V between circuit and case)
Puncture test AC 3700V/rms (between circuit and case)
External magnetic field <40A/m
External electric field <1V/m
Suitable for safety regulations IEC 61010

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Quality Assurance Period (QAP) Explanation

1.    The Quality Assurance Period (QAP) is an important aspect of our commitment to ensuring the quality and reliability of our products. We understand that customers rely on our goods to function properly and meet their expectations. To demonstrate our confidence in our offerings, we provide a warranty period during which we take responsibility for any quality issues that may arise.
2.    The length of the warranty period varies depending on the type of product. Generally, for consumable components subject to wear and tear, such as abrasion parts, the warranty period is three months. For smaller components, the warranty period is typically extended to six months. As for major equipment and machinery, we offer a one-year warranty period.
3.    We also recognize that each customer's requirements may differ, and we are open to negotiation regarding the warranty period. If the buyer requests a specific warranty duration that differs from our standard policy, we are willing to discuss and accommodate their needs accordingly.
4.    During the warranty period, we take full responsibility for any quality-related issues that arise. If a product is found to be defective or malfunctions due to manufacturing or material faults, we are committed to providing a resolution. This includes either replacing the faulty component or conducting necessary repairs to restore the product to its intended functionality. Our aim is to minimize any inconvenience caused to our customers and ensure their satisfaction.
5.    It is important to note that the warranty does not cover damages resulting from improper use, mishandling, or normal wear and tear. Additionally, if any modifications or repairs are carried out by unauthorized personnel during the warranty period, the warranty may become void.
6.    At our company, customer satisfaction is our top priority. We strive to provide high-quality products that meet and exceed expectations. The Quality Assurance Period serves as a testament to our commitment to delivering reliable solutions and ensuring that our customers have peace of mind when choosing our products.


1.    We offer various trade methods, including EXW, FOB, CIF, DDU, DDP, etc., allowing customers to choose the most suitable option based on their requirements.
2.    We consider the proximity to the factory where the goods are located when selecting the appropriate port of departure.
Customers can provide the destination port where the consignee is located or choose a designated port for delivery.
3.    Our transportation methods encompass a wide range of options, including waterway transportation, air transportation, and courier services such as DHL, FedEx, EMS, UPS, TNT, etc.
For waterway transportation, we work with reputable shipping companies such as APL, CMA, CNC, COSCO, EMC, EVERGREEN, HMM, KMTC, MCC, MSC, MSK, ONE, SITC, YML, etc.
Air transportation is available through airlines such as (Air China): CA; (China Southern Airlines): CZ; (China Eastern Airlines): MU; (Garuda Indonesia): GA; (Cathay Pacific Airways): CX; (Cathay Dragon): KA; (Korean Air): (Japan Airlines): JL;  (Singapore Airlines): SQ; (Thai Airways International): TG, and more.
4.    The transportation time will vary depending on the destination and the chosen transportation method. We will communicate and confirm the estimated time of arrival with the customer prior to shipping.
5.    Shipping costs are influenced by factors such as transportation method, weight, size, and destination. We provide shipping cost estimation services to assist customers in budgeting.
6.    Once the goods are shipped, we offer order tracking services to provide customers with detailed information about the whereabouts of their shipment. Additionally, based on the selected trade method, we can arrange cargo insurance to provide compensation in the event of loss or damage during transportation.
7.    The specific transportation arrangements mentioned above will be coordinated by dedicated personnel, taking into account the actual situation and policies. We strive to tailor the optimal and most cost-effective shipping plan based on the information provided by the customer.

Please note that we are committed to ensuring the smooth transportation of goods and will work closely with customers to address any specific requirements or concerns they may have regarding transportation.