Advertising Disclosure Dc To Dc Charger 40a Comparison - July 2025
5 Best Dc To Dc Charger 40a In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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| 1 Best Choice  9.6Exceptional | 2  9.4Excellent | 3  9.2Excellent | 4  9.1Excellent | 5 Best Value  9.0Excellent |
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ModelVictron Energy Orion XS Smart DC to DC Battery Charger 12/12 50A (700W) - IP65 Dust & Waterproof - Fully Configurable - Remote Management Possible - Advanced Battery Protection | Model Victron Energy Orion-Tr Smart DC to DC Charger (Bluetooth) - 12/12-Volt 30 amp 360-Watt - Battery Charger for Dual Battery Systems - Non-Isolated | Model Renogy 12V 30A DC-DC On-board Battery Charger with MPPT for Gel, AGM, and Lithium Batteries Using Multi-Stage Charging, in RVs, Cars, Boats, Yachts, Recommended to Match with 40A ANL Fuse | Model Victron Energy Orion-Tr Smart DC to DC Charger (Bluetooth) - 12/12-Volt 18 amp 220-Watt - Battery Charger for Dual Battery Systems - Isolated | Model ECO-WORTHY 12V 40A DC to DC Battery Charger with MPPT On-Board Solar Battery Charger Lithium LiFePO4 Battery Gel AGM, Multi-Stage Charging for Solar Panel Alternator in RVs Trailer |
BrandVictron Energy | Brand Victron Energy | Brand Renogy | Brand Victron Energy | Brand ECO-WORTHY |
Reviews | Reviews  | Reviews | Reviews | Reviews |
Tech Specs | ||||
product dimensions4 x 12.3 x 12.3 cm 453.59 g | product dimensions 7.01 x 13 x 18.59 cm 1.3 kg | product dimensions 9.6 x 5.7 x 3 cm 1.4 kg | product dimensions - | product dimensions 13.8 x 20.8 x 3.8 cm 1.35 kg |
Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.6
1Victron EnergyVictron Energy Orion XS Smart DC to DC Battery Charger 12/12 50A (700W) - IP65 Dust & Waterproof - Fully Configurable - Remote Management Possible - Advanced Battery Protection
Main highlights- UNMATCHED PERFORMANCE: With 98.5% efficiency, the Orion XS provides a stable voltage and a continuous rated output of 700W, even in 40 °C. Higher efficiency also means less heat and its compact and robust IP65 water-resistant design ensures it will fit perfectly into any system.
- THE ULTIMATE BATTERY-TO-BATTERY CHARGER: The Orion XS, engineered from the ground up, redefines DC-DC battery charging. Ideal for dual battery systems charged by (intelligent) alternators. It not only ensures top-tier performance but also guarantees the safety of your system.
- SAFE CHARGING: Packed with features to keep your gear safe and batteries charged, the Orion XS includes engine running detection and other SafetyShield+ features that work with any type of 12V alternator, including (Euro 5/6) intelligent alternators.
- CONNECTIVITY: The VictronConnect app makes it easy to configure your Orion XS and provides access to real-time data and a 30-day performance history. Instant readout allows for quick insights without waiting for pairing. Connect a communication center with premium display and unlock the endless possibilities of VRM - Remote management.
- CONFIGURABLE CHARGING: Precisely adjust the input and output currents using simple controls to match a wide range of (intelligent) alternators and batteries. It safeguards alternators from overloading and ensures the service battery is properly charged, thanks to our algorithms powered by decades of know-how.
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9.4
2Victron Energy
Victron Energy Orion-Tr Smart DC to DC Charger (Bluetooth) - 12/12-Volt 30 amp 360-Watt - Battery Charger for Dual Battery Systems - Non-Isolated
Main highlights- Professional DC to DC Charger: The Orion-Tr Smart DC-DC Charger is a professional charger that uses three stages to efficiently and safely charge your batteries.
- Flexible Power Solution: The DC DC charger is suitable for both lead acid and lithium batteries and unlimited multiple units can be connected in parallel to increase output power.
- Easy to Install: The screw terminals provide a convenient and easy installation process, eliminating the need for specialised tools.
- Dual Battery Charging: The Victron DC to DC charger is ideal for vehicles or boats where the alternator and start battery are used to charge the service battery.
- Built-in Bluetooth: The DC to DC charger can be monitored and cotrolled with smartphone or tablet via Bluetooth and the VictronConnect App. This allows you to see the charger's status and make adjustments as needed.
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9.2
3Renogy
Renogy 12V 30A DC-DC On-board Battery Charger with MPPT for Gel, AGM, and Lithium Batteries Using Multi-Stage Charging, in RVs, Cars, Boats, Yachts, Recommended to Match with 40A ANL Fuse
Why we love it
Versatile charging options: alternator, solar, multiple battery types.
Compact and lightweight, fits in tight spaces easily.
Comprehensive protections ensure safe and efficient charging.
Main highlights- 【RJ45 Communication Port Featured】 Bluetooth Monitoring Ready! Exclusively available with the BT-2 Bluetooth Module accessory and Renogy DC Home App available on the IOS and Google Play Stores, you can monitor this device remotely and simply through your phone and stay constantly updated. *Recommended to Match with 40A ANL Fuse: The Renogy ANL fuse will protect your controller, wire, and battery from overcurrent.
- 【Multiple Protections】 Renogy DC-DC On-Board Battery Charger has multiple intelligent protections includes battery isolation, over-voltage protection, battery temperature protection, over-current protection, overheat protection, reverse current protection, solar panel and alternator reverse polarity protection, guaranteeing charging safety and protecting your batteries.
- 【Multi-input for Battery Charging】Renogy DC-DC On-Board Battery Charger is designed to charge service batteries from a starting battery linked to an alternator, or by utilizing solar panels connected directly to the unit, offering multiple charging options and ensuring your battery stays fully charged. Compatible with multiple deep cycle battery types: AGM, GEL, Flooded, and Lithium.
- 【Light & Small, Ready to be Set Up】With only 9.6In in length, 5.7In in height, and 3.13lbs in weight, Renogy DC-DC On-Board Battery Charger is ready to be installed and adapt to any tiny narrow installation space, resolving your concern from the limited room in your vehicle.
- 【3-Phase MPPT Charging Technology】 With Built-in Maximum Power Point Tracking (MPPT), Renogy DC-DC On-Board Battery Charger will charge your service batteries with maximized solar power, providing 3-phase charging (Bulk, Boost and Float) to regulate the whole charging and ensure the batteries will be accurately charged at the correct voltage levels to 100%.
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Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
