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24V DC-DC Chargers
Victron and Enerdrive chargers for 24V batteries from 12V, 24V or 48V supplies.
24V DC-DC Chargers for Trucks, Boats, Caravans and Off-Grid Systems
A 24V DC-DC charger supplies a regulated, multi-stage charge to a 24V auxiliary or house battery from another DC source. That source can be a 12V alternator, a 24V starting system or a 48V battery bank. This range includes Victron Orion-Tr Smart, Orion-Tr and Orion XS models, plus the Enerdrive ePower DC-DC/MPPT charger, so you can match the input voltage, output current and isolation to your system.
Charging 24V Batteries from Different Input Voltages
Each charger is grouped by its input voltage.
- 12V to 24V: The Victron Orion-Tr Smart 12/24-10A isolated, 12/24-15A isolated and 12/24-15A non-isolated models step a 12V vehicle supply up to charge a 24V battery bank. Browse the full range of 12V to 24V DC-DC chargers.
- 24V to 24V: The Orion-Tr Smart 24/24-12A isolated, 24/24-17A isolated and 24/24-17A non-isolated models suit trucks, buses and vessels with 24V starting systems. Compare options in 24V to 24V DC-DC chargers.
- 48V to 24V: The Victron Orion-Tr 48/24-16A isolated charger supports a 24V battery or 24V loads from a 48V system.
- Higher output with solar input: The Enerdrive 24V 30A ePower DC-DC/MPPT charger combines alternator and solar charging in one unit. It can also operate from a 12V input at a reduced output current.
- High power for 12V and 24V systems: The Victron Orion XS 1400 DC-DC Smart Battery Charger is rated at 1400W for demanding dual battery installations.
Isolated vs Non-Isolated 24V DC-DC Chargers
An isolated charger keeps the input and output negatives electrically separate. This helps prevent ground loops and reduces interference on marine electronics, communications equipment and sensitive instruments. Non-isolated models share a common negative. They suit most vehicles and caravans where the chassis ground is shared. For a full technical explanation, read our guide to isolated vs non-isolated converters and DC-DC chargers.
How to Choose the Right 24V DC-DC Charger
Work through these points before you buy:
Input source: Confirm whether your alternator or supply battery is 12V, 24V or 48V. This decides which charger series fits.
Charge current: Match the output current to your battery capacity and to the spare capacity of your alternator. Options in this range run from 10A up to 30A. The Orion XS 1400 covers higher-power systems.
Isolation: Choose isolated models for marine and electrically sensitive installations. Non-isolated models suit common-ground vehicle systems.
Solar integration: If you want alternator and solar charging from one compact unit, consider the Enerdrive ePower DC-DC/MPPT.
Monitoring and setup: Victron Smart models offer Bluetooth configuration through the VictronConnect app. This makes it simple to set charge profiles for lithium or lead-acid batteries.
Choose a 24V DC-DC charger from proven Victron and Enerdrive designs. Your auxiliary battery will be charged correctly every time the engine runs, whether you are on a long haul, at anchor or off-grid.