OTC Tools OTC 3183 Digital Battery Tester. 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. .