SUNKKO T-688A Battery Internal Resistance Tester – Precision & Performance

High-Precision Measurement
Accurately tests internal resistance, voltage, and capacity of lithium batteries (18650, Li-ion, LiPo) with professional-grade sensors for reliable data.
Multi-Function Design
Combines capacity testing and charge/discharge analysis in one compact unit, saving time and workspace.
Durable Construction
Features a robust ABS casing with reinforced connectors and an intuitive LCD screen for clear readings in any environment.
Wide Application
Ideal for EV battery maintenance, DIY projects, e-bike repair, and industrial battery quality control.
Fast & Efficient
Supports rapid testing with auto-calibration and low power consumption, optimized for high-volume users.
Global Wholesale Advantage
Direct factory pricing with bulk discounts—lowest online rates guaranteed for resellers and workshops.