Case Study:

BMW: EV Battery Test System

BMW is a German multinational company which currently produces automobiles and motorcycles, and also produced aircraft engines until 1945. The company was founded in 1916 and has its headquarters in Munich, Bavaria.


BMW came to Chroma to build a test system that will allow them to run qualification and verification testing on batteries for their new electric vehicle technologies.


Chroma provided a 17020 Regenerative Battery Pack Test System solution for this customer. The main components in the battery tester included a 69200-1 Charge/Discharge Controller, an A691101 DC/AC Bi-Directional Converter, and a 69225-60-4 Regenerative Charge/Discharge Tester 4 Channel Module. The test system included a PC and Chroma’s Battery Pro software. This system configuration would allow the customer to test 4 channels individually, or in parallel for a higher power output.

Actions Performed

A standard 12V Lead-Acid battery was used to validate functionality of the 17020 system. Battery Pro was utilized to program battery charge and discharge sequences. Each of the 4 channels in the system was tested individually.


After a full system hardware validation was conducted, the customer received training on Chroma’s Battery Pro software and all functions of their 17020 system.