RC3563 High-Precision Battery Internal Resistance Tester – 18650 Li-ion Battery Analyzer

Overview 

The RC3563 is a professional-grade, high-precision battery internal resistance and voltage analyzer utilizing the true 4-wire AC Kelvin 1kHz method. Designed specifically for battery pack builders, quality control technicians, and lithium battery recyclers, it measures micro-ohm resistance and millivolt DC levels simultaneously to evaluate battery health, degradation, and cell matching with extreme accuracy.

Key Features 

• True 4-Wire AC Kelvin Measurement: Eliminates lead resistance and contact resistance errors for precise micro-ohm (µΩ) level readings.

• Simultaneous Dual Display: Large digital backlit LCD shows both internal resistance (R) and DC voltage (V) in real-time.

• Auto-Ranging Capability: Automatically shifts measurement ranges across micro-ohms, milliohm, and ohm levels.

• Wide Battery Compatibility: Ideal for testing 18650, 21700, LiFePO4, LTO, lead-acid, NiMH, NiCd, and button cells up to 100V DC.

• Sorting & Threshold Function: Features programmable resistance and voltage threshold sorting to sort matched cells quickly for battery pack fabrication.

Technical Specifications 

Ideal Applications 

• Lithium Battery Pack Building: Matching internal resistance (IR) and voltage across 18650 / 21700 cells before series-parallel assembly.

• Quality Assurance & Inspection: Sorting incoming raw battery cells and identifying fake or degraded re-wrapped lithium batteries.

• Automotive & UPS Maintenance: Testing lead-acid, AGM, and gel batteries in solar storage systems and electric vehicles.