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 Voltage Internal Resistance Battery Tester，Battery Voltage Meter for Types of Batteries, Car Battery Tester, AAA AA Battery, 100V 200Ω, Digital Battery Analyzer for Household Automotive

FNIRSI HRM-10 Voltage Internal Resistance Battery Tester，Battery Voltage Meter for Types of Batteries, Car Battery Tester, AAA AA Battery, 100V 200Ω, Digital Battery Analyzer for Household Automotive

Product ID: 638760265

Details

Brand
FNIRSI
Color
Black
Item Weight
0.48 Ounces
Power Source
Battery
Style
Black

⚡100V max voltage range

📊200Ω resistance measurement

📱TFT HD color display

€ 100.58

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power up your diagnostics with precision and style!

VIVID HD DISPLAY - Advanced TFT color screen delivers crystal-clear, easy-to-read results that elevate your testing experience.
DATA DRIVEN INSIGHTS - Stores and exports up to 8 sets of historical data, empowering you to track battery performance trends like a pro.
DUAL PARAMETER PRECISION - Simultaneously measures voltage and internal resistance for a full battery health snapshot.
KELVIN FOUR WIRE ACCURACY - Custom four-wire connection eliminates contact resistance, ensuring ultra-precise measurements every time.
UNIVERSAL BATTERY COMPATIBILITY - From AAA to car batteries, test a wide range of battery types with confidence and ease.

The FNIRSI HRM-10 is a sleek, handheld digital battery tester designed for professionals and enthusiasts alike. It features a high-accuracy Kelvin four-wire measurement system to simultaneously test voltage (up to 100V) and internal resistance (up to 200Ω) across various battery types, including automotive and household batteries. Its vibrant TFT HD color display enhances readability, while data storage and export capabilities enable efficient battery health tracking. Compact and CE/RoHS certified, it’s the ultimate tool for ensuring your batteries never let you down.

Specifications

ASIN	B0D6FPBGCX
Best Sellers Rank	#8,057 in Automotive ( See Top 100 in Automotive ) #13 in Battery Testers
Brand	FNIRSI
Brand Name	FNIRSI
Color	Black
Customer Reviews	4.4 out of 5 stars 162 Reviews
Included Components	Date cable and kelvin clip test line
Item Weight	0.48 Ounces
Manufacturer	FNIRSI
Measurement Type	Ohmmeter, Voltmeter
Model	FNIRSI HRM-10
Part Number	001
Power Source	Battery Powered
Specification Met	CE, RoHS
Style	Black
Style Name	Black
Upper Temperature Rating	45 Degrees Celsius

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€ 100.58

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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The product exactly matches the description. Very satisfied with my purchase.

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