Complete Off-Grid Solar Power Kit — Pre-Built, Tested & Ready to Go Go fully off-grid without the hassle. Each kit is professionally designed, assembled, and programmed in Devon by our in-house Victron Energy & Pytes specialists, so you can plug in and power up with confidence.Forget complicated wiring or setup, we’ve already done it for you. 🔧 How It Works Mount your solar panels. Connect the panels to the pre-built power board. Connect your batteries.That’s it, your system is live. All boards are pre-wired, programmed, and tested before dispatch for a truly plug-and-play experience.* Choose Your Power Setup Each kit is custom-built to match your needs. Pick your ideal inverter, battery capacity, and solar size using the options above. Inverter Size Options Option Model Typical Use 3 kVA MultiPlus 48/3000/35-50 Small cabins, garden rooms, light loads 5 kVA MultiPlus 48/5000/70-100 Family homes, medium off-grid setups 8 kVA MultiPlus-II 48/8000/110-100 Larger homes or high-power appliances 10 kVA MultiPlus-II 48/10000/140-100 Full off-grid properties 15 kVA MultiPlus-II 48/15000/200-100 Large properties, Farms, workshops, or heavy-duty loads Battery Options All systems use Pytes V5A LiFePO₄ batteries — safe, long-life, and scalable. 10.24 kWh → 2 × 5.12 kWh Pytes V5A 15.36 kWh → 3 × 5.12 kWh Pytes V5A 20.48 kWh → 4 × 5.12 kWh Pytes V5A 25.6 kWh → 5 × 5.12 kWh Pytes V5A 30.72 kWh → 6 × 5.12 kWh Pytes V5AExpandable and compatible with Victron ESS systems. Solar Panel Options Premium JA Solar 440 W N-Type Bifacial Double Glass All-Black panels(L 1762 mm × W 1134 mm × D 30 mm – 440 W each)You may chose to oversize your solar panel choice to maximise your solar input, depending on how many panels you can fit on your roof. We've built a simple solar panel roof calculator tool that can help estimate sizing! Option Array Size Total Output 5 Panels Small homes & cabins ≈ 2 kW 10 Panels Mid-size family homes ≈ 4 kW 15 Panels Large off-grid setups ≈ 6 kW 20 Panels Full off-grid properties with large roof space ≈ 8 kW 🧠 What’s Included Pre-built power board: Cerbo GX 2 controller, Touch screen, Lynx Distributor, consumer unit, isolation switches, trunking, sockets, all wiring & programming. SmartSolar MPPT charge controller: Up to 10 panels → 250/60-MC4 Over 10 panels → 250/100-VE.Can All cabling, breakers, fuses & safety isolation pre-installed. JA Solar panels + full mounting kit (rails & brackets). 🕒 Build & Delivery Built to order in 1–2 weeks (larger systems may vary slightly). Fully tested before shipping. Free tracked UK delivery by secure pallet. 🧰 Installation Notes This kit is designed for ease of installation, but we recommend it be fitted by a competent person.All boards are plug-and-play ready with safety switches, labelled connectors, and factory-tested programming. “DIY” refers to the simplicity of setup, not electrical qualification. Always follow regulations for final connection. 💬 Expert Support Your system is backed by Callidus technical support and our Victron-certified team — before, during, and after installation.Have questions about which kit fits your home or cabin?Talk to our specialists today. ⚡ Why Choose Callidus 6,000+ happy customers 30,000+ products sold Rated 4.8 / 5 from hundreds of reviews Victron Energy Authorised Distributor Pytes Energy Official UK Distributor Built in Devon 🇬🇧 The board in the images above is an example board and yours will be built bespoke to your requirements.