Spot the difference!
Converters and chargers may look alike and might occupy a similar location in your system configuration but they perform different roles.
DC-DC Charger: A dynamic multi-stage charger adjusts voltage as needed, connecting starter and leisure batteries. Efficiently charges the latter from alternator power while your vehicle runs.
DC-DC Converter: Transforms DC input (e.g., 24V to 12V) for stable output at a fixed voltage, perfect for DC devices like fridges or lights. Not for primary charging; mainly for device operation.