Testing Lab / Engineering Report

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.

Bistook Lab2026-06-11Engineering Evidence
Test EquipmentFNIRSI HRM-10
Test EnvironmentNot specified
Battery ModelEVE INR21700 40PL
Test ProductBistook Copper 21700 Single-Cell Holder
Report ID—
Test Date—

This test evaluates the additional resistance introduced by a Bistook copper-contact 21700 battery holder.

Test ItemMeasured Resistance
EVE INR21700 40PL Cell Only3.23 mΩ
Cell Installed in Bistook Copper Holder4.13 mΩ
Additional Resistance Introduced by Holder0.90 mΩ
Measurement notice: Results apply to the documented sample, equipment, environment and method. Validate your final assembly.