The Bosch BAT 155 Heavy Duty Battery and Electrical System Analyzer is designed for the commercial vehicle industry. Featuring patented single load, dynamic resistance technology that provides fast and accurate results. The BAT 155 tests 6V and 12V batteries from 100 to 6,000 CCA test capacity, including AGM, gel cell, flooded lead-acid, start/stop EFB and commercial, and SLI batteries using a micro-load test for proven, accurate results. It will also test 12V and 24V charging systems with a diode/ripple test. Its integrated printer captures test results for customer records, presenting state of health and state of charge percentage.