Fangrui Product Details Note: Lithium Iron Phosphate Battery Charging Is Not Supported Working Voltage: Dc5v Applicable Battery: Suitable For All Batteries That Meet The Requirements Of Stopping Discharge Voltage Of 2.5~3.5v And Starting From 2.8v To 4.2v Power Supply Interface: Two-way Type-c Power Supply Interface (excluding Power Supply And Power Cord) System Language: English/chinese Can Be Switched Test Quantity: 4-way Charging And Discharging Measurement Internal Resistance Measurement: Support, Use Dc Two-wire Method To Test Internal Resistance Charging Function: Support, Automatic Cut-off Charging When Fully (lithium Iron Phosphate Battery Charging Is Not Supported) Discharge Function: Support, Automatically Stop When Conditions Are Met, And The Discharge Current Is Not Adjustable Automatic Charging And Discharging: Supported. The Battery Is Fully At Of Automatic Mode Cyclic Charging And Discharging: Supported, 1~9 Cycles Adjustable (only Supported In Automatic Mode) Status Prompt: Supported Cooling Mode: Fan Active Co