WORLD ENERGY LABS Interrogator 4210B ElectroChemical Battery AnalyzerWORLD ENERGY LABS Interrogator 4210B ElectroChemical Battery Analyzer is the leading battery test system available today, The Interrogator¢â platform has been recognized as much more than a handheld FRA. It is a flexible, handheld electrochemical analysis platform that can be customized with application specific algorithms and custom user interfaces for a variety of applications such as fuel cells, super capacitors, biomedical sensors including DNA and RNA, corrosion detection, automotive diagnostic applications and a host of other electrical and electrochemical applications. WORLD ENERGY LABS (WEL) is a leading manufacturer of battery test equipment specializing in the stored energy and electrochemical test and measurement markets. WEL has a range of products including the Interrogator¢â 8210 Handheld Frequency Response Analyzer (FRA), the Interrogator¢â as well as a number of software and custom hardware solutions.Your Best Choice for Battery Health, Reliability and Maintenance Cost Savings