Origin: this battery capacity tester is manufactured to the highest standards, ensuring both reliability and precision in battery testing. Technical Specifications: Equipped with a Type-C LCD display for clear and immediate reading, this tester is designed for 18650 MAh batteries, providing accurate measurements of battery capacity and internal resistance. Voltage and Package Details: Operating on a DC5V supply voltage and housed in a robust TQFP package, this device is engineered for both durability and performance, making it ideal for rigorous use in various electronic applications. Customization and Condition: This tester can be customized to meet specific needs, offering flexibility for personal or professional use. It arrives in pristine condition, ready to perform right out of the box. Functional Design: The 4-channel capability allows for simultaneous testing of multiple batteries, enhancing efficiency and productivity. Its compact and user-friendly design ensures it is easy to handle and operate, making it a must-have tool for professionals and hobbyists alike. Description: This advanced battery capacity and internal resistance tester is designed for precision measurement and efficient management of various battery types. It features a dual Type-C power supply interface, allowing for versatile connectivity options. Features: Working Voltage: DC5V Applicable Battery: Compatible with batteries having a discharge stop voltage between 2.5V and 3.5V, and a start voltage from 2.8V to 4.2V. Power Supply Interface: Dual Type-C (power supply and cord not included). Test Quantity: 4-way charging and discharging measurement. Internal Resistance Measurement: Utilizes DC two-wire method. Charging Function: Automatic cutoff when fully charged (not suitable for lithium iron phosphate batteries)