Specially used to measure 18650 battery capacity. The integration of charging and discharging eliminates the tedious operation of disassembling and assembling the battery to replace the charging and discharging of the device. The size of the discharge current can be switched and it is convenient to use. Small size, easy to carry. stable performance. Product name: 18650 battery capacity internal resistance tester charging and discharging integrated version Working voltage: DC5V Detection voltage: ≤DC5V Capacity measurement range: 0~99999mAh Energy measurement range: 0~99999mWh Battery internal resistance measurement: support Display real-time voltage: support Display real-time current: support Display real-time power: support Log run time: support Working mode indication: support Current Status Indication: Supported Simultaneous discharge: not supported (simultaneous discharge of 18650 battery Test① and external power supply Test② is not supported) Discharge load: 10W 8QJ cement resistance x 2 Discharge current selection: x0.5A or ~1A Charging interface: Type-C External discharge interface: Type-C Preset discharge stop voltage: 3V (not adjustable) Preset full stop voltage: 4.2V (not adjustable) Data storage: The measurement data is not saved, and the accumulated data is automatically cleared when the power is turned off or when the working mode is switched. Product size: 108x85x24mm Type: 18650 lithium battery capacity internal resistance tester color:Green Material:plastic Package Contents: 2 x Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.