Product Introduction

The ETCR EM7550 battery internal resistance tester, also known as a rechargeable battery tester or battery tester, is used to measure the internal resistance, voltage, and temperature of lead-acid, nickel-cadmium, nickel-metal hydride, and lithium batteries to 

determine their health. This instrument uses the Kelvin AC four-wire method to measure battery internal resistance, ensuring accurate measurements without being affected by contact resistance between the test leads, terminals, and battery electrodes.

Controlled by a microprocessor, the battery internal resistance tester features an internal 16-bit ADC that accurately measures battery internal resistance, voltage, and temperature. It performs measurements without stopping the UPS system. Using AC low-resistance 

measurement and noise reduction technology, measurements can be performed while the device under test is running, significantly reducing test time. The instrument features automatic shutdown, alarms, data storage, data review, bar graph display, computer upload, 

and Bluetooth communication. Wireless measurements and data review are possible via Bluetooth connection with smart devices such as mobile phones and tablets. The ETCR EM7550 battery internal resistance tester features a 5-inch color touchscreen display. 

Its high-end design offers a wide measurement range, high resolution, and convenient operation and portability. It is accurate, reliable, stable, and has strong anti-interference capabilities. It is an essential instrument for battery production, battery installation, 

equipment manufacturing, and equipment maintenance.

Product Features

1. Using the Kelvin AC 4-wire method, it measures internal resistance accurately without being affected by lead or contact resistance.

2. Simultaneously displays resistance, voltage, and temperature for clear test results.

3. Using the AC 1kHz test method, it eliminates the need to interrupt battery power supply to other devices.

4. Comparator function allows you to set the internal resistance and voltage thresholds, making it easier to determine battery aging.

5. Filter function ensures more stable and accurate test readings when enabled.

6. Available with both needle-type and clip-type test leads to accommodate different application scenarios.

7. Bluetooth communication allows you to view and record test results on your mobile device. 8. Computer upload function, with USB interface, test data can be uploaded to the computer for easy storage and analysis.

1. Resistance measurement accuracy

2. Voltage measurement accuracy

3. Temperature measurement accuracy

4. Other specifications