Basics of EV Charger Diagnostics and Maintenance

As EV adoption accelerates among commercial fleets, understanding how to diagnose and maintain charging infrastructure is essential to protecting uptime and accelerating ROI.

“If a Level 2 [EV charger] is not functioning, [it’s] usually more cost-effective to replace it than try to repair, because the infrastructure is there already.” – Tom Bowen, President of Qmerit Solutions and Commercial Electrification

In a recent article, Fleet Maintenance Magazine breaks down the fundamentals of EV charger operation, common points of failure, and best practices for maintenance. With complex systems involving software, connectivity, and high-voltage hardware, even minor problems like Wi-Fi issues can interrupt fleet readiness. Downtime doesn't just delay routes—it delays ROI. Regular preventative maintenance—including cleaning contact points, testing firmware, and calibrating power output—can prevent major failures down the line.

Read the article