Description
xVictron Energy 25A Buck-Boost DC/DC Converter
The Victron Energy 25A Buck-Boost DC/DC Converter is a non-isolated DC-to-DC converter designed for mobile, off-grid and vehicle-based electrical systems where the input and output voltages may vary independently. It is suited to professional installers working on campervans, boats, trucks and off-grid installations where a stable output voltage must be maintained regardless of fluctuations at the source.
Key Features
- 25A continuous output current with buck-boost topology, allowing the output voltage to be set higher, lower or equal to the input voltage.
- Non-isolated design provides efficient power conversion without the losses associated with transformer-based isolation.
- Wide input voltage range accommodates varying battery or alternator voltages found in real-world vehicle and off-grid applications.
- Compact and lightweight at 1.03 kg, making it practical for installations with limited space.
- Compatible with Victron's VE.Direct communication interface for monitoring and configuration via Victron Connect or a GX device.
- Suitable for 12V to 12V, 12V to 24V, 24V to 12V and 24V to 24V system configurations.
Product Overview
A standard DC-DC converter is either a buck (step-down) or boost (step-up) type, which means it only functions correctly when the input voltage is consistently above or below the output voltage. The buck-boost topology removes this constraint. The converter can regulate a stable output even when the input voltage crosses above and below the output voltage during operation, which is common in systems fed by a partially discharged battery or a variable alternator output.
At 25A, this unit is capable of handling meaningful charge currents for secondary battery banks. In a split-charge vehicle system, for example, it can charge a 12V leisure battery from a 12V starter circuit without the output being affected by engine-off voltage drop or engine-on alternator spikes. The non-isolated architecture means the negative terminals of input and output share a common reference, which must be accounted for during system design.
Integration with the Victron ecosystem is straightforward. The VE.Direct port allows connection to a GX device such as a Cerbo GX, enabling the converter to appear within the Venus OS dashboard alongside other system components. This is particularly useful in managed off-grid or marine installations where a full system overview is required.
Specifications
- SKU: ORI303025000
- Output current: 25A
- Converter type: Buck-Boost, non-isolated
- Weight: 1.03 kg
- GTIN: 8719076035909
Applications
- Charging a secondary leisure or auxiliary battery from a vehicle starter battery circuit.
- Maintaining a stable 24V output from a 12V source, or vice versa, in mixed-voltage vehicle systems.
- Off-grid cabins and mobile installations where input voltage varies with battery state of charge.
- Marine electrical systems requiring regulated DC supply to secondary battery banks.
- Truck and commercial vehicle auxiliary power systems with variable alternator output.
What Is Included
- 1x Victron Energy 25A Buck-Boost DC/DC Converter
Installation Notes
Installation should be carried out by a qualified electrician or experienced system integrator familiar with DC power systems. The non-isolated design means input and output grounds are common; incorrect wiring in systems with multiple ground references can cause faults or damage. Ensure cable sizing and fusing are appropriate for 25A continuous DC current. For marine installations, follow applicable NMEA or RCD Directive wiring standards. Victron Connect (via VE.Direct USB adapter or Bluetooth if supported) should be used to configure input and output voltage parameters before commissioning.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.