Battery Tester

Key Features

• Measures internal resistance, voltage, and temperature of:

  • Lead‑acid batteries

  • GEL batteries

  • Lithium batteries

  • Other rechargeable batteries

• AC injection measurement method for high accuracy

• Supports large‑capacity lithium battery charging

• USB interface for PC connectivity

• Bluetooth connection for mobile devices

• Pre‑set judgement thresholds: PASS / WARNING / FAIL

Product Description

• Rechargeable battery internal resistance tester designed for professional diagnostic use

• Simultaneously measures voltage, internal resistance, and temperature

• Suitable for lead storage, GEL, and lithium batteries

• Can measure ESR of electrolytic capacitors (reference only)

• Not affected by contact resistance between test leads and battery terminals

• Includes data storage, data recall, alarm, and auto shutdown functions

• Wide measurement range with high resolution and accuracy

• Compact, portable design ideal for:

  • Battery production

  • Battery installation

  • Equipment manufacturing

  • Equipment maintenance

• Stored data can be transferred to PC via optical USB + software

Specifications

Measurement

• Resistance: 3mΩ – 3Ω

  • Resolution: 1µΩ

  • Accuracy: ±1% FS ± 20 digits

• DC Voltage: 7V – 71V

  • Resolution: 1mV

  • Accuracy: ±0.2% FS ± 10 digits

• Temperature: -10.0°C to 60.0°C

  • Resolution: 0.1°C

  • Accuracy: ±1.0°C

Environmental Conditions

• Operating: 23°C ± 5°C, <75% RH

• Working: -10°C to 40°C, <80% RH

• Storage: -20°C to 60°C, <70% RH

Electrical & Measurement Method

• Power supply: DC 3.7V lithium battery

• Max input voltage: DC 70V

• Internal resistance measurement:

  • 1kHz AC, 4‑terminal method

  • Open‑circuit terminal voltage ≤ 3V

  • Measuring current: 2.0mA–200mA (range‑dependent)

• Temperature sensor: NTC 10kΩ @ 26°C

• A/D conversion: Successive approximation

• Display update rate: 5 times/sec

• Response time: 200ms

• Measurement time: ~2 seconds

Display & Physical

• LCD: 70.1 × 52.6 mm, 3.5" (320×240, 16‑bit color)

• Dimensions: 190 × 121 × 51 mm

• Weight: 80g (with battery)

Functions

• USB interface for data upload, saving, and printing

• Bluetooth connectivity

• Manual/automatic hold & storage

• PASS / WARNING / FAIL judgement

• Low battery indicator

• Auto power‑off after ~15 minutes (can be disabled)

• Power consumption: 300mA min / 500mA max

Safety

• Insulation resistance: >20MΩ (500V between circuit & case)

• Withstand voltage: AC 3700V RMS

• External magnetic field: <40A/m

• External electric field: <1V/m

• Complies with IEC 61010

Included Accessories

• USB cable

• Test leads

• Temperature sensor

• Carrying case

• Instruction manual