Features 1、Power Checker: Can be applied for the test of current, power, dynamic test, ageing, etc. of various DC power supplies. 2、Practical Use: Also can be used to test the discharge time, capacity and internal resistance of a variety of batteries. 3、Clear Display: LCD screen display, human computer interaction interface and true 4 wire measurement ensure high accuracy. 4、Reliable Work: Comes with power down memory, over voltage protection, over current protection and so on for safer working. 5、Easy to Operate: Having been connected to computer through USB cable, the monitor allows you to query historical curves. Specification Item Type: Battery Tester Material: Iron Function: Intelligent battery power comprehensive tester. Model MD150 MD250 Power Supply Mode DC 12V 2A Constant Discharge Current Adjustment Range 0.1-20A Maximum Discharge Current Error 0.01A Maximum Discharge Power 150W 250W Discharge Voltage DC 0.5V-30V Discharge Mode Constant Current (CC) Constant Voltage (CV) Constant Resistance (CR) Constant Power (CP) Package List 1 x Battery Tester 1 x Testing Line (1 Set) 1 x USB Data Cable