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ES8020 Battery Internal Resistance Tester
Universal Rechargeable Battery Internal Resistance Tester · AC 4-Terminal Method · Bluetooth/USB · Automatic Frequency Conversion
The universal rechargeable battery internal resistance tester, referred to as battery internal resistance tester, is an instrument used to measure the internal resistance, voltage, and temperature of rechargeable batteries such as lead-acid batteries and lithium batteries to determine battery health status. It can also be used as a reference instrument for measuring the ESR parameters of electrolytic capacitors. This instrument uses the AC 4-terminal test method to measure battery internal resistance, which is not affected by contact resistance between test leads, terminals, and battery electrodes, ensuring accurate measurement values. It also features data storage, data review, alarm, and auto power-off functions.
Features
Function
Battery internal resistance measurement, battery voltage measurement, temperature measurement
Noise Avoidance Frequency
Yes, automatic frequency conversion range 920Hz~1080Hz
Resistance Resolution
1 uΩ
Voltage Resolution
1 mV
Temperature Resolution
0.1℃
Response Time
200ms
Measurement Time
Approx. 2 seconds
USB Interface
Has USB interface for data upload to PC, save and print
Bluetooth Connection
Yes
Detail Images
Specifications
| Function | Battery internal resistance measurement, battery voltage measurement, temperature measurement |
| Noise Avoidance Frequency | Yes, automatic frequency conversion range 920Hz~1080Hz |
| Accuracy Guaranteed Temp/Humidity | 23℃±5℃, below 75% rh |
| Power Supply | DC 3.7V lithium battery |
| Resistance Resolution | 1 uΩ |
| Voltage Resolution | 1 mV |
| Temperature Resolution | 0.1℃ |
| Measurement Range | Internal resistance measurement: 0.000mΩ~3.100 Ω (4 ranges) Voltage measurement: 0.000V~±120.0V (2 ranges) Temperature measurement: -10.0℃~60.0℃ (single range) |
| Max Input Voltage | DC 70V (between + and - measurement terminals), AC input not allowed |
| Measurement Method | Internal resistance measurement: 1KHz AC 4-terminal test method, open-circuit terminal voltage 3V max Measurement current: 2.0mA~200mA (different currents for different ranges) Temperature measurement: NTC temperature sensor (10KΩ at 26℃) 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 inches (320×240 resolution 16-bit true color screen) |
| Instrument Dimensions | L×W×H: 190mm×121mm×51mm |
| USB Interface | Has USB interface for data upload to PC, save and print |
| Bluetooth Connection | Yes |
| Hold and Storage Function | Manual hold and storage, automatic hold and storage |
| Measurement Judgment Function | Pre-settable PASS, WARNING, FAIL judgment thresholds |
| Battery Voltage | 5-bar battery level display, prompts charging when battery is low |
| Auto Power Off | Approx. 15 minutes after power on with no operation (can be disabled in settings) |
| Power Consumption | 300mA MIN / 500mA MAX |
| Weight | Instrument: 480g (including battery) |
| Operating Temp/Humidity | -10℃～40℃; below 80% RH |
| Storage Temp/Humidity | -20℃～60℃; below 70% RH |
| Insulation Resistance | Above 20MΩ (between circuit and housing at 500V) |
| Withstand Voltage | AC 3700V/RMS (between circuit and housing) |
| External Magnetic Field | ＜40A/m |
| External Electric Field | ＜1V/m |
| Applicable Safety Standards | IEC 61010 |
Product Accessories
| Instrument | 1 unit |
| Test Leads | 1 set |
| USB Communication Cable | 1 pc |
| Charger | 1 pc |
| Monitoring Software CD | 1 pc |
| User Manual / Warranty Card | 1 set |
| Instrument Case | 1 pc |