New DC/DC 3-stage battery charger from Victron Energy

The Orion-Tr Smart DC-DC charger is a professional DC to DC adaptive 3-stage charger with built-in Bluetooth. 

For use in dual battery systems in vehicles or on boats where the (smart) alternator and the start battery are used to charge the service battery.
The unit can be monitored and programmed via Bluetooth and can be remotely controlled via a remote on/off switch and has an engine running detection mechanism. Since, when the engine is running, these dynamos (powered by the on-board electronics of Euro 5 and 6 engines) do not always emit the correct charging current, a DC-DC converter is essential for charging the service battery properly.

The Orion Tr-Smart charger can be used in 12V or 24V systems and is suitable for both lead acid and lithium batteries. Models are available up to 400W and unlimited multiple units can be connected in parallel to increase output power. 

Suitable for high temperatures up to 55°C with a full rated output up to 40°C.

More info in this datasheet and on smartenergyshop.be.