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12–48V 3A Boost Step-Up Converter
12–48V 3A Boost Step-Up Converter
SKU:SL-VB48
In stock
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12–48V 3A Boost Step-Up Converter
📝 12–48V 3A boost step-up converter
Upgrade your 12v electrical system with this 12–48V boost step-up converter, designed to power higher-voltage devices from a standard 12v battery bank. Perfect for campervans, RVs, motorhomes, caravans, 4WD canopies, and off-grid setups, it’s also an ideal solution for powering Starlink Gen 2 from DC power, delivering a clean and stable 48V output while you’re on the move.
⭐ Essential benefits
• 12v to 48v conversion – step up low-voltage systems to run higher-voltage devices
• High efficiency design – up to 94% efficiency reduces power loss and heat
• Fully sealed IP68 housing – waterproof and dustproof for harsh environments
• Built-in protection systems – safeguards against overload, over-voltage, and short circuits
• Compact form factor – ideal for tight installs in vans, canopies, and electrical bays
• 144W output capacity – supports devices up to 48v @ 3A
⚙️ Functionality
This boost converter takes a 12v DC input and steps it up to a regulated 48v DC output, making it ideal for systems where your battery bank is 12v but your equipment requires higher voltage.
It continuously regulates output to maintain a stable 48v supply, while integrated protection circuits guard against faults. The sealed housing and built-in heatsink design ensure reliable performance under continuous loads in demanding environments.
🔌 Compatibility
• 12v DC battery systems
• 48v DC devices up to 3A / 144W
Ideal for:
• Campervans, caravans, RVs, motorhomes, and 4WDs
• Off-grid and solar battery systems
• 48v networking, communication, and control equipment
• Powering Starlink Gen 2 from a 12v system (within load limits)
🧰 Installation difficulty
🟡 3/5 (Moderate) – requires correct DC wiring, fusing, and mounting.
🔍 Features
• 12v DC input stepped up to fixed 48v DC output
• Up to 3A output current (144W max)
• High conversion efficiency up to 94%
• IP68 waterproof and dustproof rating
• Over-current, over-voltage, and short-circuit protection
• Wide operating temperature range
• Compact sealed module with integrated heatsink
• Pre-wired leads for easy installation
📊 Specifications
| Specification | Detail |
|---|---|
| Input Voltage Range | 12v DC |
| Output Voltage | 48v DC |
| Max Output Current | 3A |
| Max Output Power | 144W |
| Conversion Efficiency | Up to 94% |
| Waterproof Rating | IP68 |
| Working Temperature | -30°C to +80°C |
| Module Size | Approx 74.4 × 74 × 31.1mm |
| Cable Length | Approx 150mm |
📦 What’s included
• 1 × 12–48V 3A boost step-up converter
🙌 Why choose this product?
This converter provides a simple and efficient way to run 48v devices from a 12v system, making it perfect for modern off-grid setups. With high efficiency, sealed protection, and reliable output, it’s a must-have for powering communication gear and Starlink systems on the move.
🚀 Our promise
Order today for same-day dispatch and explore our full range of campervan and off-grid power solutions.

Our Commitment
At Campervan Builders, our commitment is simple: we only supply quality campervan, caravan, motorhome, and RV parts that we’ve personally tested in real off-grid conditions. From interior LED lighting to Starlink 12V conversion kits, every product is chosen for reliability, durability, and ease of installation. We back this with fast shipping Australia-wide, friendly support, and honest advice to help DIY builders and professionals alike. When you shop with us, you’re choosing proven gear that keeps you connected and comfortable on every adventure.
















