12V Car Battery Tester LED Digital Alternator Voltage Analyzer Diagnostic Tool

12V Car Battery Tester Digital Alternator Tester 6 LED Lights Diagnostic Tool. 1 x 12V Digital Battery Alternator Tester. Battery tester size: 12 5.2 1.8cm / 4.7 2 0.7in. 6-LED display, clearly present the alternator and battery state.