18650 Battery Capacity Tester with 1.77inch Display Type-C Measure Internal Resistance (1X Channel)

The Efillooc 1-Channel 18650 Battery Capacity Tester Module is a professional lithium battery analyzer designed to measure battery capacity (mAh), energy (mWh), internal resistance, voltage, current, power, and runtime. Featuring a 1.77-inch full-color display, USB Type-C power input, and automatic charge-discharge-charge testing, it helps accurately evaluate the performance and health of individual 18650 lithium-ion batteries. Ideal for battery pack builders, electronics hobbyists, repair technicians, laboratories, and DIY projects.

Key Features

Product Description

The Efillooc 1CH 18650 Battery Capacity Tester Module is an efficient testing solution for accurately measuring the performance and condition of 18650 rechargeable lithium-ion batteries. Designed with an integrated charging and discharging system, it automatically performs complete battery analysis without requiring manual battery transfer between separate chargers and dischargers.

The module features a bright 1.77-inch color display that provides real-time information including battery voltage, charging and discharge current, power consumption, battery capacity (mAh), energy (mWh), runtime, internal resistance, operating mode, and cycle status.

Supporting automatic charge-discharge-charge cycles with up to 9 programmable loops, the tester is ideal for battery grading, battery matching, quality inspection, refurbishment, repair work, and DIY battery pack assembly.

Powered through a convenient USB Type-C interface, the tester operates from a standard 5V DC power source. The discharge current is fixed at approximately 1A, while charging is automatically managed to safely recharge the battery after testing.

Important: During discharge, the onboard resistor may reach temperatures of approximately 80°C. Avoid touching the resistor while the module is operating. The tester is designed specifically for 18650 lithium-ion rechargeable batteries.

Specifications

Compatible Battery Brands

Panasonic, Samsung SDI, LG Energy Solution, Sony, Murata, Molicel, Sanyo, EVE, Vapcell, BAK

Compatible Battery Types

18650 Lithium-ion Cells, Flat-Top 18650 Cells, Button-Top 18650 Cells, Protected 18650 Cells, Unprotected 18650 Cells, High-Drain 18650 Cells, Rechargeable Li-ion Cells, DIY Battery Pack Cells, Flashlight Batteries, Power Bank Cells

Package Contents

Why Choose the Efillooc 18650 Battery Tester?

• Measures actual battery capacity and energy
• Tests internal resistance
• Automatic charging and discharging
• Integrated battery analysis system
• Real-time color display
• USB Type-C powered
• Supports repeated cycle testing
• Compact and easy to operate
• Suitable for battery matching and grading
• Ideal for laboratories, workshops, repair centers, and DIY users

Frequently Asked Questions

Which batteries does this tester support?
This module is designed for 18650 lithium-ion rechargeable batteries.

Can it measure battery capacity?
Yes. It measures battery capacity (mAh) and energy (mWh) automatically.

Does it measure internal resistance?
Yes. The tester measures battery internal resistance to help evaluate battery condition. Accuracy is best when the battery is fully charged.

Does it automatically recharge the battery after testing?
Yes. The automatic mode performs Charge → Discharge → Charge without manual intervention.

Can I adjust the discharge current?
No. The discharge current is fixed at approximately 1A.

Does it save test results after power is removed?
No. Measurement data is cleared after power loss or restart. Only the configured settings are retained.