TechFix Episode 3: Starting and Charging – What You Need to Know About the Energy Storage Systems on the all-new VNL

Name: Volvo Trucks Academy
Price range: $

Course Number:: 501002-03
Training Type:: Video

Training Hours:: Less than 1 hour

Episode 3 of TechFix takes an in-depth look at the Starting and Charging System on the all-new Volvo VNL. The episode explains how the Single and Dual Energy Storage Systems improve reliability, battery performance, and start quality by managing energy flow between the ultracapacitor, living batteries, and alternator, while also outlining the system’s key components such as battery sensors, the BPMU, the CCIOM, and voltage regulation controls. It covers common issues, parasitic drains, declining battery health, programming requirements, and what technicians can diagnose versus what requires component replacement. Special attention is given to proper sensor installation, correct reconnection order, calibration procedures, and the importance of using Volvo TechTool for system verification. The episode emphasizes that understanding how the Starting and Charging System works, and its limitations-helps technicians identify faults, prevent no-start conditions, reduce unnecessary repairs, and keep trucks on the road longer.

Launch