Features CLEAR DISPLAY: The liquid crystal display is clear and can display the discharge capacity and discharge energy DURABLE AND CONDUCTIVE: Excellent electronic components are used, which are sturdy and durable, with good conductivity and long service life TEST PARAMETERS: This battery capacity tester is used to test the voltage, discharge capacity and discharge energy of 18650 lithium EFFICIENT AND TIME SAVING: Dual working power supply, possess high working efficiency, save your time ACCURATE AND INTELLIGENT: Intelligent chip control, bring accurate measurement, support parameter memory function, easy to check next timebatteries Specification: Item Type: Lithium Battery Capacity Tester Product Model: XH M239 Supply Voltage: DC5-12V lithium battery 18650(not include) Measurement Accuracy: 1mAH Standby Current: 5mA Discharge Current: About 500mA Load Power: 10W 8Ω Application: Lithium battery 18650 Package List: 1 x Lithium Battery Capacity Tester Package List 1 x Lithium Battery Capacity Tester