Now Stocking Simarine Monitoring Solutions at Solar 4 RVs
Discover the latest addition to our product range, Simarine monitoring solutions for off-grid, caravan, and marine systems. Explore custom wiring diagrams, combo kits, and...
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Connected battery and tank monitoring
Battery and tank monitoring displays, shunts and modules
Explore Simarine displays, shunts, sensor modules and connection accessories for monitoring batteries, tanks and onboard electrics.
Precision Simarine PICO battery, tank, and temperature monitors for marine, caravan, and off-grid power systems.
Quick battery-monitor check
Enter the battery voltage, inverter load, other simultaneous DC loads and maximum combined charging current. The estimate applies a 25% selection allowance.
Estimated discharge current is about 205.2A versus 100A charging. A 25% selection allowance gives 256.5A before choosing a suitable product range.
Estimate only: inverter watts ÷ nominal bank volts ÷ 90% assumed inverter efficiency, plus simultaneous DC loads, compared with maximum combined charging current; the larger path receives a 25% allowance. Verify the exact shunt’s continuous and overload ratings, cable and terminal limits, environmental rating and manufacturer instructions. A shunt is measuring equipment, not overcurrent protection.
Customer stories
Absolutely stellar service from Cameron at Solar 4 RVs. Initially had him quote up a solar system for my campervan back in June 2024 and then when I was ready to purchase in November 2024 he was able to give me the best prices for every product and so I went ahead with the order.
Also gave me some tips to commission the system once I installed the products. Stoked on the Victron gear. Thanks guys!
Purchased a 12v/15a battery charger in 2023. Had issues with it today (2025). Called their info number and explained. Instantly agreed to accept it as a warranty issue and dispatched a replacement without any problems. Extremely quick service and item dispatched express courier that same day. Outstanding customer service. Thank you.
Purchased a literal boat load of electronics from them for our vessel. It all works great and they did an amazing job setting up the panel. We have had the gear a few years now and still reach out when we need help. Great customer service!
Not sure which Simarine product suits your system? Send our technical team the model you are considering and your system details, and we will check the surrounding parts.
Ask our technical teamFrom the Solar 4 RVs library
Guides on matching batteries, tanks and sensors to compatible displays, shunts and modules.
Solar 4 RVs guide
Discover the latest addition to our product range, Simarine monitoring solutions for off-grid, caravan, and marine systems. Explore custom wiring diagrams, combo kits, and...
Read guide →
Solar 4 RVs guide
Both power and energy are important components to consider when choosing solar power for your Caravan or boat as it must be able to...
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Solar 4 RVs guide
Topics include current, selecting cable, cable resistance, voltage drop, battery bank wiring, fuses and circuit breakers, fuses, shunts, earth wiring, solar panels, voltage sensing...
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Solar 4 RVs guide
Discover the perfect Ruuvi sensor for your monitoring needs. Compare features and shop now for precise home, outdoor, and industrial environmental monitoring
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Solar 4 RVs guide
This interactive calculator will help you understand your RV's full power system, including the inverter, battery charger, DC-DC Charger, battery, solar panels, MPPT, and...
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Solar 4 RVs guide
In power systems, ignoring continuous ratings isn't just a minor oversight—it's risking safety, efficiency, and longevity. Installers and buyers often focus on impressive peak...
Read guide →About this range
When travelling off-grid in your caravan, RV, or boat, knowing the exact status of your electrical system is vital. The Simarine PICO series delivers an advanced, highly accurate monitoring solution for modern 12V and 24V setups. Combining a sleek, visually appealing display with robust data tracking, Simarine allows you to monitor everything from deep cycle battery capacity to multi-tank fluid levels all from a single screen or your smartphone.
Simarine’s modular design means your system can grow with your needs. Whether you are managing a straightforward 4WD canopy build or a complex marine power network, Simarine provides real-time insights into your power consumption and generation. By integrating dedicated battery monitors and shunts, you can track precisely how much power your solar panels are producing or how much energy your 12V fridge is consuming.
Selecting the right Simarine components depends on your specific vehicle size, power load, and the number of inputs you wish to track. Use these criteria to design your ideal setup:
Step 1: Select a Display Unit. The PICO display is the heart of the system. Choose between a panel mount for flush installations or a stand-alone surface mount depending on your dashboard or cabinetry layout. Both styles are available in silver or black finishes to match your interior.
Step 2: Size Your Main Shunt. Calculate your maximum continuous current draw. For standard 12V caravan and boat systems, a 300A shunt offers plenty of headroom. If you run a high-capacity power inverter for induction cooking or air-conditioning, upgrading to the heavy-duty 500A shunt is highly recommended.
Step 3: Add Expansion Modules. If you want to know exactly how much power your solar system contributes versus your alternator, add a Quad Shunt. If fluid tracking is essential, select the dedicated tank module, which integrates multiple voltage and resistance tank sensors seamlessly.
Step 4: Network Integration. For marine applications, the NMEA2000 Gateway allows the Simarine PICO to broadcast battery and tank data directly to your boat's primary multi-function display.
The PICO system features a built-in Wi-Fi module, allowing you to connect your smartphone directly to the display. The free Simarine app lets you view live data, adjust settings, and update firmware effortlessly, giving you total command over your off-grid power anywhere in or around your vehicle.
As an Australian Family Business with a decade of experience, we are dedicated to supplying high quality products for robust 12V electrical systems. We offer comprehensive before & after support to ensure you get the right gear for your setup. Whether you are building from scratch with monitoring kits or expanding an existing array, our fast dispatch means you will have your parts ready for the next adventure. Experience total peace of mind on the road or the water. Browse our Simarine range and secure your premium monitoring equipment today.
Powering Your Adventure
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