Battery Capacity Analyzer, Works With 6/12V Lead Acid Batteries, Measures Resistance, Terminal Voltage, Max. Input Volts 30VDC, Accuracy +/-0.2 Percent +/-10 mV, Powered By Battery Under Test, LCD Display, Includes (2) Alligator Test Leads, USB Type B Cable, Adapter, Test Report, Calibration Certificate, Manufacturers Warranty Length 1 yr.