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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
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Step up 12V to a stable 48V output for higher-voltage devices
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High efficiency (up to 94%) to minimise power loss and heat
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Fully sealed IP68 body – waterproof and dustproof for harsh environments
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Built-in overload, over-voltage and short-circuit protection
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Compact module for tight installs in vans, canopies and electrical bays
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Supports up to 144W (48V @ 3A) – ideal for networking gear and comms hardware
⚙️ Functionality
This boost converter takes a 12V DC input and steps it up to a regulated 48V DC output, ideal where your system runs on 12V but your device (such as Starlink Gen 2 or other 48V equipment) requires higher voltage.
It continuously regulates voltage to maintain a stable 48V output while integrated protections guard against over-current, over-voltage and short circuits. The sealed housing, integrated heatsink and cooling design help it run reliably under continuous loads, even in demanding environments.
🔌 Compatibility
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Input: 12V DC battery systems
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Output: 48V DC devices up to 3A / 144W
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Ideal for:
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Campervans, caravans, RVs, motorhomes & 4WDs
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Off-grid and solar battery systems
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48V networking / comms / control gear
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Powering Starlink Gen 2 from a 12V system (within load limits)
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🧰 Installation Difficulty
🟡 3/5 (Moderate) – requires basic DC wiring knowledge (fusing, polarity, cable sizing, secure mounting). Recommended for confident DIYers or installation by an auto electrician.
🔍 Features
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12V DC input stepped up to fixed 48V DC
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Up to 3A output current (144W max)
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High conversion efficiency up to 94%
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IP68 waterproof and dustproof rating
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Over-current, over-voltage & short-circuit protection
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Wide operating temperature: -30°C to +80°C
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Compact, sealed module with integrated heatsink
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Short input/output leads for easy integration
📊 Specifications
| Specification | Detail |
|---|---|
| Input Voltage Range | 12V DC |
| Output Voltage | 48V DC |
| Max Output Current | 3A |
| Max Output Power | 144W |
| Conversion Efficiency | ≤94% |
| Waterproof Rating | IP68 |
| Working Temperature | -30°C to +80°C |
| Module Size | 74.4 × 74 × 31.1 mm |
| Cable Length | Approx. 150 mm |
| Use Case Highlight | Suitable for powering Starlink Gen 2 and other 48V devices from 12V systems |
📦 What’s Included
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1 × 12–48V 3A Boost Step-Up Converter

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Tested for Reliability
All products are tested in real Aussie off-grid conditions before we stock them.
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Order before 3 PM AEST for same-day shipping from Geelong, VIC.
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Quality Over Price
We only stock products we’d use ourselves—even if they cost a bit more.
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.


















