Victron Energy Orion-Tr Smart 12/48V 8A 380W Isolated DC to DC Charger with Bluetooth for Dual Battery Systems

The Victron Energy Orion-Tr Smart 12/48V 8A 380W Isolated DC-DC Charger is the professional way to charge a 48V battery bank from a 12V alternator or start battery in vehicles, boats, and dual battery systems. If you've been searching for how to charge a 48V battery from a 12V alternator with a Victron Orion-Tr, this isolated, Bluetooth-enabled charger is your answer — and at $29.50 (was $59.00), it's a 50% discount you can buy online today.

How the Orion-Tr Smart 12/48 Setup Works

Mount the unit between your 12V start battery/alternator and your 48V service bank. The three-stage charge algorithm (bulk, absorption, float) safely boosts 12V input to 48V output. Configure lithium absorption time, charge voltages, and engine-detect behavior in the VictronConnect app via built-in Bluetooth. Connect unlimited units in parallel for more output power.

Key Specifications

• Brand: Victron Energy
• Model: Orion-Tr Smart 12/48
• Output: 48V, 8A, 380W (isolated)
• Bluetooth: Yes, via VictronConnect app
• Battery types: Lead-acid, AGM, lithium (LiFePO4)
• Installation: Screw terminals, no special tools

Compatibility and Use Cases

• Vans, trucks, and RVs charging 48V lithium house banks
• Boats using alternator + start battery to charge service batteries
• 48V server-rack battery and off-grid solar systems

Price, Deal, and Comparison

At $29.50, this charger is half the $59.00 compare-at price — an affordable alternative to non-isolated or non-Bluetooth boosters. Isolated design protects your start battery from 48V bank faults. Apply coupon OUTPOST12 for an extra 12% off; orders over $45 ship free.

Alternatives

• Non-isolated Orion-Tr models: cheaper but no galvanic separation
• Higher-amp Orion-Tr Smart units: faster charging at a higher price