ANENG LM09 High precision Battery Internal Resistance Tester Multimeter Rechargeable RMS AC/DC Voltage 25000 Counts Portable Electronic Repair Tester
Digital Battery Internal Resistance Tester & Multimeter, 2-in-1, 25000 Counts, 0.1mOhm-200Ohm, ±100V, AC/DC Voltmeter, Temperature, Continuity, Data Logging, Color LCD, USB Rechargeable for EV, Energy Storage, Electronics Repair
Key Features：
High-Precision Battery Internal Resistance Testing: Accurately measures internal resistance from 0.1mOhm to 200Ohm with ±0.5% accuracy and voltage up to ±100V DC (±0.2%). Ideal for EV batteries, energy storage, telecom systems, and various battery types. The dedicated aviation plug input ensures stable, noise-free connections.
2-in-1 Professional Multimeter Design: A full-featured 25000-count digital multimeter with auto/manual ranging. Measures AC/DC voltage (up to 1000V DC / 750V AC), resistance, capacitor value, temperature (°C/°F), semiconductor testing, and continuity with buzzer. This versatile tool covers precision battery diagnostics and everyday electronics repair.
Data Logging & Hold for Trend Analysis: In resistance test mode, press the REC key to record multiple sets of data for easy comparison and battery health assessment. The HOLD key freezes the display so you never miss an important measurement, saving time on re-testing.
User-Friendly Adjustable Color Display: The vivid reverse-contrast color LCD offers adjustable brightness (10%–100%). A soft silicone dust cap minimizes external noise when idle, while the fold-out stand provides optimal viewing angles. Weighing just 194g, the robust ABS+TPE housing is built for portability.
Rechargeable & Smart Power Management: Built-in 3.7V 2000mAh lithium battery with convenient USB Type-C charging. A low-battery alert reminds you to recharge. Programmable auto power-off (5–120 minutes or disabled) and adjustable buzzer volume help extend battery life and adapt to any work environment.
Technical Specifications：
Display: 25000-count reverse-contrast color LCD
Battery Internal Resistance Test
Resistance Range: 0.1mOhm – 200Ohm
Resistance Accuracy: ±0.5%
Voltage Range: ±100V DC
Voltage Accuracy: ±0.2%
Test Speed: 1 time/s, 2 times/s, 4 times/s (selectable)
Output Impedance: 100Ohm
Calibration Points: 0Ohm, 1mOhm, 10mOhm, 100mOhm, 1Ohm, 10Ohm, 100Ohm, 200Ohm, -60V, -10V, -1V, 1V, 10V, 60V
Multimeter Functions
DC Voltage: 25mV – 1000V (±0.5%+3)
AC Voltage: 25mV – 750V (±0.8%+3)
Resistance: 0Ohm – 250mOhm / 1Ohm – 10kOhm (±5.0%+5)
Capacitor: 0nF – 99.99mF (±5.0%+5)
Hz Measurement: 0Hz – 999.9kHz (±0.1%+2)
Temperature: -20°C – 1000°C (±2.5%+5) / -4°F – 1832°F (±2.5%+5)
Semiconductor Test: Yes
Continuity Buzzer: Yes
Auto/Manual Ranging: Yes
General
Power Supply: 3.7V 2000mAh rechargeable Li-ion battery (built-in)
Charging: USB Type-C
Data Hold: Yes
Auto Power Off: 5–120 minutes adjustable, or off
Low Battery Alert: Yes
Buzzer Volume: 0%–100% adjustable
Screen Brightness: 10%–100% adjustable
Material: ABS + TPE
Dimensions: 14.85 × 7.65 × 3.4 cm (5.84 × 3.01 × 1.34 in)
Weight: 194 g
Languages: English, Chinese
Package Contents：
1 × Battery Internal Resistance Tester & Multimeter
1 × Test Probe Pair (Red & Black)
1 × Internal Resistance Test Clip (Kelvin Clip)
1 × Temperature Probe
1 × USB Type-C Charging Cable
1 × Protective Soft Bag
1 × User Manual
1 × Gift Box
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