The Rc-300Pr Is A Portable, Fully Featured Tester That Provides Quick And Accurate Results Utilizing Autometers Award Winning" Digital Pulse Load" Technology. The Rc-300Pr Is User Friendly, Instructing The User Exactly What To Do While Testing An Sla Battery. Professionally Accurate Test Results Are Shown On A Lcd Display After Each Test And Can Be Shared With A Customer Using The Included Bolt-On Printer (Pr-20). The Rc-300Pr Has A Built In Memory So You Can Easily Review And/Or Print Test Results.