Observed arrival · 2026-11-03
Swags & Volts: 12V touring-power calculators
A free set of calculators and plain-English guides for planning 12V electrical systems in Australian 4WDs, campers, and caravans.
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- Australian 4WD, camper, and caravan owners
- Worth noticing
- The Trip Planner models battery charge night by night and warns when a trip may run short.
Field notes
The tool set is divided by specific decisions: estimating battery, solar, controller, and DC-DC sizes; choosing cable and fuse sizes; and checking runtime or charge across a trip. Supporting pages include wiring diagrams and plain-English guides, while an Ask section is described as answering questions with the maths shown. The homepage also provides About and Contact links and identifies Gippsland, Victoria, as the project’s base.
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One card from the complete issue