Why can the measurement of internal resistance be a good or bad sign for a battery?

The battery will be damaged during use, the capacity will decrease and the internal resistance will increase. The lower the internal resistance of the battery, the better the performance and the higher the load capacity.

Does the battery need to be fully charged for measurement?

The internal resistance of a battery is usually different when it is fully charged and when it is low. When the battery is fully charged, the internal resistance is usually lower. When the battery is low, the internal resistance is usually higher.

Why are the measurements unstable?

There is poor contact between the test clip and the battery, or there is a strong background noise.

Why is the measured internal resistance higher than the battery internal resistance?

The internal resistance of a large capacity battery is very low. The internal resistance of the battery electrode or wire is often higher than the internal resistance of the battery.The clamp needs to be in the correct position to get accurate data.

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FNIRSI HRM-10 Precision Voltage Internal Resistance Battery Tester

FNIRSI HRM-10 Precision Voltage Internal Resistance Battery Tester

Product ID: 638760265

Details

Brand
FNIRSI
Color
Black
Item Weight
13.61 g
Power Source
Battery
Style
Black

⚡100V max voltage range

📊8 sets historical data storage

🔋200Ω resistance measurement

AR$176474

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Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power up your precision — never second-guess your battery health again!

VIVID HD TFT DISPLAY - Advanced color screen delivers crystal-clear, easy-to-read results that elevate your testing experience
DATA DRIVEN DECISIONS - Save, export, and analyze historical test records to stay ahead in battery maintenance and replacement
KELVIN 4 WIRE ACCURACY - Custom four-wire connection eliminates contact resistance, ensuring ultra-precise measurements every time
DUAL PARAMETER PRECISION - Simultaneously measures voltage & internal resistance for comprehensive battery health insights
UNIVERSAL BATTERY COMPATIBILITY - From AAA to car batteries, test all types with confidence and batch review up to 8 sets of data

The FNIRSI HRM-10 is a handheld, battery-powered tester that accurately measures voltage up to 100V and internal resistance up to 200Ω using a Kelvin four-wire method. Featuring a vibrant TFT HD color display, it supports all battery types, stores up to 8 historical test records, and enables data export for professional-grade battery diagnostics.

Specifications

ASIN	B0D6FPBGCX
Best Sellers Rank	#19,514 in Automotive ( See Top 100 in Automotive ) #36 in Battery Testers
Brand Name	FNIRSI
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (172)
Included Components	Date cable and kelvin clip test line
Item Weight	13.61 g
Manufacturer	FNIRSI
Measurement Type	Ohmmeter, Voltmeter
Model	FNIRSI HRM-10
Number of Items	1
Part Number	001
Power Source	Battery Powered
Specification Met	CE, RoHS
Style Name	Black
Upper Temperature Rating	45 °C

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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AR$176474

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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2 days ago

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