Featuring 4.3 in. TFT display and icon-based main menu, Keithley 2281S Battery Simulator and Precision DC Power Supply (2281S) offers emulation of battery performance from full charge to total discharge using battery model that includes state of charge, amp-hour capacity, equivalent series resistance, and open circuit voltage. Battery models simulated or played back can be obtained in various ways, and system also functions as power supply with max output of 20 V and 6 A.