Features 1.77 Inch Display: This battery capacity testing module has a 1.77 inch display that shows internal resistance, capacity, voltage, current, and power at the same time. Charging And Discharging In One: This battery capacity detection module is integrated with charging and discharging, eliminating the tedious operation of disassembling and assembling the battery when replacing the device. Data Zeroing: This battery capacity detection module has a data zeroing function, which can be used for shutting down, switching modes, and capacity, energy, and time data are automatically zeroed. Excellent PCB Material: This battery capacity testing module is made of excellent PCB material, which is sturdy and wear resistant, high temperature resistant, and has a long service life. DIY Modification Available: This battery capacity testing module is available for DIY modification, which can be retrofitted with a battery holder, or can be connected to a battery for testing through an extension cord or crocodile clips outside. Specification: Item Type: 18650 Lithium Battery Capacity Tester Material: PCB Applicable Battery: Meet the stop discharge voltage 2.5-3.5V, 4.2V charging batteries are applicable Power Supply Interface: Dual Type C Interface, Power Supply Cable (C Port Cell Phone Cable) System Language: English Test Quantity: 4 Channel Charging and Discharging Measurement Internal Resistance Measurement: Support, Using DC two wire method to test the internal resistance. Charging Function: Support, Full Automatic Cut Off Charging, Not Applicable to Li FePO4 Battery Charging. Discharge Function: Support, Automatically stop when conditions are reached. Automatic Charging And Discharging: Support, The battery is fully charged at the end of the automatic mode, not applicable to the charging of lithium iron batteries. Cycle Charging And Discharging: Support, 1-9 Cycles Adjustable. Status Alert: Support Stop Discharge Voltage: 2.5V, 2.6V, 2.7V, 2.8V, 2.9V, 3.0V, 3.1V, 3.2V, 3.3V, 3.4V, 3.5V, Total 11 Adjustable Steps Discharge Current: Maximum about 1A current, can not be adjusted, does not support independent transformation Heat Dissipation: Mode: Active Heat Dissipation High Temperature Protection: Support Charging Voltage: Professional Battery Charging Chip Control, Maximum About 1A Charging, Full Voltage 4.2V Power Failure Save: Only save the setup parameters, do not save the measurement data Package List: 1 x Battery Capacity Tester Module 1 x Driver Package List 1 x Battery Capacity Tester Module 1 x Driver