NOTE: The Orion-Tr Smart 48/48-8A (380W) can only be pre-ordered. The Victron Orion-Tr Smart 24/12, 24/24 is a powerful DC-DC adaptive 3-stage charger with robust built-in Bluetooth technology. It works perfectly in dual battery systems in vehicles or boats, automatically detecting engine running and allowing remote control with a switch. The battery can be monitored and programmed remotely via Bluetooth for maximum convenience. The Victron Orion-Tr Smart 24/12 series is the ideal charger for lead acid and lithium batteries in 12V or 24V systems. With output power up to 400W and the ability to connect multiple units in parallel for higher wattage, this charger ensures long lasting battery life even in temperatures up to 55°C and rated output up to 40°C.