Speed. Accuracy. Reliability. These are the cornerstones behind the technology in our digital battery testers. 3183 tests 12 volt batteries (125-1400 CCAs) and analyzes by measuring multiple parameters within the battery to deliver accurate results.A live voltmeter allows easy starting/charging system testing. Its bright,4 digit LED display indicates the battery's good/bad status,voltage, and available CCAs. It even compensates for cold temperatures. Features and Benefits Utilizes cost effective conductance test technology for accurate testing at a value price point Quick 1-second initial results 125-1400 CCA range Analyze starting/charging system voltages Tests 12V batteries Temperature and low charge compensation Detects and identifies loose leads Detects bad cells Surface charge warning Measures multiple international units:CCA,IEC,DIN,BCI,and EN 4 digit LED display shows good/bad status,available CCAs,and voltage Includes Digital Battery Tester and soft-sided carrying case.