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 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.
ETCRMETER is a high-end brand of ETCR. All products are manufactured by ETCR, which also provides technical support and after-sales service.

Product Features
1. Adopt with the Kelvin AC 4 - wire method measurement, unaffected by wire or contact resistance, obtaining accurate internal resistance measurement value.
2. Displays resistance, voltage, and temperature at the same screen, test results clear and obvious.
3. Adopt with the AC 1kHz test method, no need to interrupt battery power supply to other devices.
4. Comparator function which can setting internal resistance and voltage thresholds for easier judgement battery aging.
5. Filter function ensures the test reading more stable and accurate when enabled.
6. Equipped with both pin-type and clip-on test leads to suit various application sties.
7. Bluetooth communication function which can view and record test results on mobile device.
8. Computer upload function, equipped with USB interface allows for easy uploading the test data to computer for storage and analysis.
 

1. Resistance Measurement Accuracy

2. Voltage Measurement Accuracy

3. Temperature Measurement Accuracy

4. Other Specifications