HOW IT WORKS
💡 The NOMAD Charging Box is a fully assembled, pre-wired Plug & Play Split Charge Relay Enclosure Set with a voltmeter and battery protection – ready to use.
No crimping, soldering, or guesswork required. Simply connect the four numbered cables (1 to 4) to their respective terminals and enjoy a safe, reliable dual battery system that’s ready to power your journey.
Available with 3, 5 or 7 metre cables, the system includes a 140A Automatic Voltage Sensing Relay (VSR), a voltmeter display, a built-in low voltage disconnect to protect your leisure battery from over-discharge, and a 6-way fuse box (30A) for safe power distribution to your 12V accessories.
The durable enclosure is waterproof and dustproof, ensuring long-lasting performance even in harsh environments. It’s also easy to mount on a wall or panel thanks to mounting holes.
Upgrade your campervan, motorhome, off-grid vehicle, or marine setup with the NOMAD Charging Box – an all-in-one split charger solution designed for safe and efficient charging of auxiliary (leisure) batteries up to 220Ah.
⚙️ System Features & Integrated Modules
✅ 140A Automatic Voltage Sensing Relay (VSR)
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Automatically connects your vehicle starter battery to your leisure battery when charging voltage is detected.
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No ignition wire required — activates only when the engine is running.
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Safely charges leisure batteries up to 220Ah capacity.
✅ Digital Voltmeter Display with Control Button
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Displays live voltage and charge percentage of your leisure battery.
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Helps you monitor system status at a glance.
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Manual on/off button allows you to disable the display to conserve power when needed.
✅ Built-In Low Voltage Disconnect (LVD) for Appliances
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Protects your leisure battery from over-discharge.
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When voltage drops below 11.8V, a 60-second countdown begins — then the system automatically cuts power to all connected appliances (fridge, lights, pump, etc.).
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Prevents deep discharge, which can permanently damage your battery and reduce its lifespan.
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Power is restored automatically once the battery recharges to a safe level.
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⚠️ Maximum current draw for appliances: 30 Amps
✅ 2x Manual Isolation Switches (Rotary Isolators)
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Left-side isolator:
➤ Disconnects the vehicle battery from the split charge relay.
➤ Useful as a service function or when storing the vehicle long-term — safely disconnects the system. -
Right-side isolator:
➤ Disconnects the leisure battery from the split charge relay.
➤ Also acts as a manual master switch for all appliances — instantly cuts power when needed.
✅ Waterproof & Dustproof Enclosure with Ventilation Membrane
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Fully sealed housing keeps out water, dust, and debris, making it ideal for mobile and outdoor environments.
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Built-in ventilation membrane prevents internal condensation while blocking moisture and dirt from entering.
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Equipped with four mounting points for secure and easy wall installation in your van, camper, or enclosure.
🔧 Specification
Cables exiting the NOMAD Charging Box:
Cable no.1 – to vehicle POSITIVE battery terminal
🔴 3, 5 or 7 metre cable – 110A RED (POSITIVE) cable
➡️ Fuse box holder with 60A fuse
➡️ 15cm lead to vehicle POSITIVE battery terminal
Cable no.2 – to Negative Leisure Battery Terminal & VEHICLE GROUND
⚫ 70cm – 110A BLACK (NEGATIVE) cable
➡️ 8mm post-type battery terminal
➡️ 40cm BLACK (NEGATIVE) cable to vehicle ground
Cable no.3 – to LEISURE POSITIVE battery terminal
🔴 70cm – 110A RED (POSITIVE) cable
➡️ Fuse box holder with 60A fuse
➡️ 15cm lead to the leisure battery POSITIVE terminal
Cable no.4 – to appliance's fuse box
🔴⚫ 50cm – 33A twin-core cable (Red = POSITIVE, Black = NEGATIVE)
➡️ Connected to a 6-way fuse box holder for appliances
(Max 30A total load)
WOLTMETER
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Displays real-time voltage and charge percentage of your leisure battery.
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Helps you quickly check the system status at a glance.
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The manual on/off button allows you to turn off the display to save power when necessary.
6-WAY FUSE BOX FOR APPLIANCES
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6-way fuse box for 12V appliances
Max 30A total load
BUILT-IN LOW VOLTAGE DISCONNECT
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Protects the leisure battery from deep discharge.
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Cuts power from the leisure battery to appliances if voltage drops below 11.8V (after a 60s delay)
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Restores power automatically when the voltage recovers.
WATERPROOF & DUSTPROOF ENCLOSURE
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Smart and functional design
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Sealed, waterproof, dustproof housing
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The ventilation membrane prevents condensation
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Blocks moisture and dirt
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Four mounting points for secure installation
CHARGING & SAFETY SOLUTION
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140A Voltage Sensing Relay (VSR)
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Auto-connects the starter and leisure batteries when charging
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Charges leisure batteries up to 220Ah
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2x Manual Isolation Switches:
• Disconnect the vehicle battery
• Disconnect the leisure battery and cut power to appliances
SAFETY
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Equipped with two 60A safety fuses for reliable protection
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Pre-installed terminal connections for quick, safe setup
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Designed for hassle-free, safe battery connection
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High-quality components for long-lasting performance
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Ready-to-use system ensures safe and efficient charging
The NOMAD Charging Box is pre-wired and fully assembled. Simply connect the four numbered cables according to the included instructions for a ready-to-use, reliable dual battery system.
COMPACT & SMART SOLUTION
With easy installation for a hassle-free setup
Right-side isolator:
➤ Disconnects the leisure battery from the split charge relay.
➤ Also acts as a manual master switch for all appliances — instantly cuts power when needed.
6-way fuse box for 12V appliances
Max 30A total load
Left-side isolator:
➤ Disconnects the vehicle battery from the split charge relay.
CABLE no.1
- to START Battery POSITIVE Terminal
Digital Voltmeter Display with Control Button
VEHICLE GROUND
60A charge fuse
60A charge fuse
Cable length available in 3, 5 or 7 metres
70cm cable
70cm cable
50cm cable
Cable no.2
– to Negative Leisure Battery Terminal
Cable no.3
– to LEISURE POSITIVE battery terminal
Cable no.4
– POSITIVE and NEGATIVE
to appliances fuse box