About This

• 12V Battery Testing Accuracy: Test battery capacity, life, and health on 12V lead acid batteries from 100–1700 CCA, including flooded, AGM, and GEL types for automotive, truck, marine, golf cart, and deep cycle use with no battery size entry required
• Starter & Alternator System Analyzer: Offers complete automotive electrical diagnostics, testing starter draw, alternator output, parasitic drain indicators, and charging performance at idle, rev, and load to quickly identify voltage or system issues
• Simple Load Testing Without Guesswork: Advanced electronic tester design eliminates manual input errors by selecting automotive, truck, or non-auto ranges and delivers fast digital results even on batteries with low charge or unknown capacity
• Wide Voltage & System Compatibility: All-weather digital meter operates from 5V to 39.9 volts and supports testing of 12V and 24V starting and charging systems in volt mode, making it a versatile analyzer for auto, vehicle, and equipment diagnostics
• Built for Pro Use in the USA: Heavy-duty clamps, reverse polarity protection, patented circuitry, and a clear LED bar graph display deliver reliable results for professional tools, shops, and technicians who depend on consistent performance
• The B400 Electrical System Analyzer is warranted to be free of defects in materials and workmanship for a period of two years from the date of purchase. This warranty applies to all repairable instruments that have not been tampered with or damaged through improper use including unauthorized opening of the unit. Please ship warranty units that require repair freight prepaid to Service Center along with proof of purchase, return address, phone number and/or email address.

Overview

• Brand : Tech Professional Service Tools
• Power Source : 9v Battery Powered
• Style : B400
• Color : Black
• Min. Operating Voltage : 5 Volts