Battery Internal Resistance Tester

DC handheld resistance tester

KM 930

General rechargeable battery internal resistance tester Abbreviation: battery internal resistance tester. It is a measuring instrument used to measure the internal resistance, voltage and temperature of rechargeable batteries such as lead storage batteries and l ithium batteries to determine the health of the battery. It can also be used as a meter to measure the ESR parameters of electrolytic capacitors (for reference only).This meter uses the AC 4-terminal test method to measure the internal resistance of the battery, and can measure the correct measurement value without being affected by the contact resistance between the test wire, terminal and battery electrode. It also has functions such as data storage, data access, alarm, and automatic shutdown. The whole machine is high-grade and beautiful, with wide measuring range, high resolution, convenient operation, easy to carry, 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.

General rechargeable battery internal resistance tester controlled by a microprocessor, the internal 16-bit ADC can accurately detect battery internal resistance, voltage and temperature. It is characterized by measuring without stopping the UPS system, using AC low-resistance measurement and noise reduction technology, without stopping the normal operation of the device under test, and measuring under the running state, which greatly shortens the test time.At the same time, it has the functions of data storage, histogram display, data upload, computer, mobile phone, tablet and other smart devices Bluetooth connection for wireless measurement and data access.

Technical Specifications :
• Function : Battery internal resistance measurement, battery voltage measurement, temperature measurement
• Accuracy guaranteed temperature and humidity : 23 °C ±5 °C , below 75%rh
• Power supply DC 3.7V lithium battery
• Resistance resolution 1 u Ω
• Voltage resolution 1 mV
• Temperature resolution 0.1 °C
• Measuring range
Internal resistance measurement:0.000mΩ~3.100 Ω (4 ranges configuration)
Voltage measurement: 0.000V~±71.00V (consisting of 2 ranges)
Temperature measurement: -10.0℃~60.0℃ (single range configuration)
• 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-circuit terminal voltage 3V max Measuring current: 2.0mA~200mA (different measuring currents in different ranges) Temperature measurement: NTC temperature sensor (10KΩ at 26°C) A/D conversion method: successive approximation type Display update frequency: 5 times/second
• Response time 200ms
• Measure time About 2 seconds
• LCD Size 70.1mm×52.6mm /3.5 inches (320*240 resolution 16-bit true color screen)
• Instrument size : 190mm×121mm×51mm
• USB interface : With a USB interface, the stored data can be uploaded to the computer, saved and printed
• Bluetooth connection : Yes
• Hold and store function : Manual retention and storage, automatic retention and storage
• Measurement judgment function : Pre-set PASS, WARNING, FAIL judgment thresholds
• Battery voltage The battery level is displayed in 5 bars, reminding to charge in time when the battery voltage is low
• Automatic shut-down No operation when power on, it will power off automatically after about 15 minutes (can be turned off in the settings)
• Power consumption 300mA MIN / 500mA MAX
• Weight Meter:480g (With battery)
• 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)
Withstand voltage AC 3700V/RMS (between circuit and case)
• External magnetic field : <40A/m
• External electric field : <1V/m
• Suitable for safety regulations: IEC 61010
• Accessories : Test leads, USB cable, Charger, Software CD, Instruction Manuals, Instruments box

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