Schumacher PST-900X DSR ProSeries 6/12/24 Volt Battery Tester with Printer 3 testers in 1 - battery tester, charger system tester and starting system tester Has a 3 button operation 16 character liquid crystal display with adjustable backlighting displays the results of the tests Print the results for permanent records Includes thermal printer, rugged carrying case, 50 ampere battery clamp, 1 roll of standard thermal printer paper, 6 AA batteries