Automotive Lead-acid Batteries 

The universal rechargeable battery internal resistance tester is referred to as the battery internal resistance tester. It is used to measure the internal resistance, voltage and temperature of rechargeable batteries such as lead batteries and lithium batteries to determine the health of the battery. It can also be used as a measuring instrument for measuring electrolytic capacitors. ESR parameter meter. 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 line, the terminal and the 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.

The universal rechargeable battery internal resistance tester is controlled by a microprocessor, and the internal 16-bit ADC can accurately detect the internal resistance, voltage and temperature of the battery. 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.

      Features

   Battery internal resistance, battery voltage, temperature measurement

       Precision

   23℃±5℃, below 75%rh

       Power supply

   DC 3.7V lithium battery

       Resistance resolution

   1 u Ω

       Voltage resolution

   1 mV

       Temperature resolution

   0.1℃

       Measuring range

   Internal resistance measurement：0.000mΩ~3.100 Ω （4 ranges configuration）

       Voltage measurement：0.000V~±71.00V （2 ranges configuration）

       Temperature measurement：-10.0℃~60.0℃（Single range configuration）

       Maximum input voltage

   DC 70V（+Between measuring terminal and-measuring terminal）、No input communication

       Measurement method

   Internal resistance measurement: 1KHz AC 4-terminal test method, open-circuit terminal voltage 3V max

Measurement current: 2.0mA~200mA (different measurement currents in 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

       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

   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

   There is no operation when the machine is turned on, and it will be turned off automatically after about 15 minutes (can be turned off in the settings)

       Power consumption

   300mA MIN / 500mA MAX

       Quality

   480g

       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)

       Resistant to pressure

   AC 3700V/RMS (between circuit and case)

       External magnetic field

   ＜40A/m

       External electric field

   ＜1V/m