Tell us your setup and what you run — Wattonomy designs the whole system: battery, inverter, wiring and a sourced parts list, validated to standard.
Built by anABYC Certified Master TechnicianYour setup
Your country’s units, voltage and wiring standard. US = AWG, °F, 120 V (ABYC); UK, Europe and Australia/NZ are metric, 230 V (BS 7671 · IEC · AS/NZS).
Optional — leave blank to use your climate. The coldest value protects charging; the hottest sizes your cables.
Recommended uses Victron. Value picks a vetted budget brand where we have a verified option for your region — otherwise it stays on the recommended battery.
1–2 days suits vans & boats; 3–5 for cabins & full off-grid.
One-way distance from source to device. Pre-filled with typical values — set your real measurements for accurate gauges. Longer runs need thicker cable to hold voltage drop.
If you drive or motor regularly, an alternator + DC-DC charger adds power on top of solar. Off by default — it never shrinks your battery.
Reduces solar for the driving you enter — never below half, and your battery backup is unchanged. Park longer and you lean on the battery.
What are you powering?
From a battery monitor (Ah × V) or a plug-in power meter.
Describe your rig in your own words — we’ll fill it in, you adjust, then it’s sized to the standards.