2026 Battery Tester Multimeter ANENG LM09 2 IN 1 True RMS AC/DC Voltage Capacitance Resistance Temperature 25000 Counts Detector Tools for Electrician

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