Testing Laboratory

Battery Testing Laboratory

Measured data for battery holder resistance, contact material, voltage drop and high-current performance.

3.23mΩ Cell4.13mΩ Installed13.98mΩ Steel
Test Reports

Measured. Verified. Published.

Engineering evidence with test photos and measurable results.

Copper vs Steel Battery Holder Contact Resistance Comparison
FNIRSI HRM-10

Copper vs Steel Battery Holder Contact Resistance Comparison

Cell Only: 3.23mΩ Copper Holder: 4.13mΩ Steel Holder: 13.98mΩ Copper contacts reduced additional resistance dramatically compared with traditional steel contacts.

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Testing Lab
Report
FNIRSI HRM-10

Measured Internal Resistance of a Copper 21700 Battery Holder

Cell only: 3.23 mΩ. Installed in holder: 4.13 mΩ. Added resistance: 0.90 mΩ.

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