Features:
1. Supports reverse polarity protection to effectively prevent device damage caused by incorrectly installed batteries, ensuring safer and more reliable operation.
2. Features four independent channels that operate without interference, enabling simultaneous charging, discharging, capacity sorting, or aging tests for four 21700 batteries.
3. Features an ABS air-guiding base paired with a large 40x40mm fan for active, efficient cooling, ensuring stable long-term operation.
4. Delivers precise capacity measurement with reliable data, meeting high-precision battery performance evaluation requirements.
5. Supports Chinese/English interface switching with real-time display of test parameters for intuitive, convenient operation.

Parameter:
Power Supply (Self-Supplied): Use two DC 5V 3A or higher adapters via Type-C port
Test Subject: Ternary Lithium Iron Phosphate 21700 battery; cannot charge Lithium Iron Phosphate batteries
Charging Voltage: 4.2V fixed, non-adjustable; charges via onboard 4506 charging chip
Charging Current: Maximum 1A non-constant current, non-adjustable, controlled by 4056 chip
Stop (Discharge) Voltage: 2.5-3.5V, 11-step adjustable
Discharge Current: Maximum 1A non-constant current discharge, non-adjustable
Discharge Resistor: 6W 3Ω 9J wirewound resistor, modification not supported
Internal Resistance Measurement Method: DC two-wire method principle test, results for reference only
21700 Battery Testing: Directly tests 21700 batteries without adapters
Cooling Method: Active cooling via 40*40mm fan
Reverse Polarity Protection: Supported
Main Unit Dimensions: 147*102*33mm

Package include:
Tester*1 (Shipping does not include batteries)