FNIRSI HRM-10 Battery Voltage & Internal Resistance Tester

The FNIRSI HRM-10 is a handheld high precision battery tester that measures both voltage and internal resistance simultaneously, giving you a fast and reliable assessment of battery health. With true four wire Kelvin measurement, the device minimizes errors caused by lead resistance for accurate results. Designed for professionals and hobbyists alike, the HRM-10 is suitable for automotive, lithium ion, lead acid, and other common battery types. 

Featuring a bright TFT HD color display, rechargeable battery with USB C charging, and built in data storage, this tester also supports historical measurement records, sorting mode, and data export, making it a versatile tool for diagnostics and monitoring in workshops, repair centers, and field environments.

Highlights:

• Measures DC voltage & internal resistance simultaneously.
• True four wire (Kelvin) connection for improved accuracy. 
• TFT HD color display for clear readings.
• Built in rechargeable battery with USB C charging (5V/1A).
• Sorting mode to automatically classify good/bad batteries.
• Supports history records and data export.
• Compact, ergonomic handheld design. 

Specifications:

General

• Model: FNIRSI HRM-10.
• Display: TFT HD color screen.
• Battery: 1000mAh rechargeable lithium battery.
• Charging: USB C (5V/1A). 
• Dimensions: ~158.7×80.5×28.4mm.
• Weight: ~400g.

Voltage Testing

• Range: 0 - ±100V DC. 
• Gears: Auto / 1V / 10V / 100V. 
• Accuracy: ±0.5%.

Resistance Testing

• Range: 0-200Ω. 
• Gears: Auto / 20mΩ / 200mΩ / 2Ω / 20Ω / 200Ω. 

Measurement

• Signal Frequency: AC 1kHz.
• Operating Temp: -10°C to +45°C.
• Storage Temp: -20°C to +80°C.
• Humidity: < 80% RH. 

Ideal For:

• 📊 Automotive battery diagnostics & maintenance.
• 🔋 Lithium ion, lead acid & power tool battery testing.
• ⚡ Battery health analysis & cell comparison.
• 🔧 Workshop & field battery troubleshooting.
• 🧰 Tech labs, repair centers & hobbyists.
• ⚙️ Data tracking with export and sorting features.