Your electric Mercedes-Benz relies on two critical energy sources the 12V battery and the high-voltage drive battery. At AT Technicians, we provide complete battery diagnostics and safe replacement services to ensure performance and longevity. Our 12V battery checks involve voltage, load, and resistance tests. We inspect auxiliary functions powered by this system door locks, lighting, infotainment and determine if recharge or replacement is needed. Upon replacement, we register the new battery with the vehicle ECU. High-voltage diagnostics are conducted using factory-approved tools. We inspect cell voltage balance, charge state, thermal consistency, and isolation resistance. If modules show degeneration or communication faults, we provide repair or advise replacement based on battery management data. We follow all Mercedes-Benz safety protocols using insulated tools and PPE. Post-installation, we verify system integrity via Xentry. For peace of mind with your Mercedes-Benz EV battery systems, book a full inspection at AT Technicians today.