FIND THE EVIDENCE · TEST YOUR THEORY · EXPLAIN THE FAILURE
Every system leaves clues.
Explore three short, illustrated investigations. You are not graded for guessing: inspect equipment, compare measurements, test a change, and show why your solution works. No sign-in required.
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The Overnight Drain
A cabin battery was charged at sunset, but the refrigerator went quiet before sunrise. Equipment notes and equipment readings seem to disagree. Investigate where the energy went.
Open caseOpen case → CASE 02Full Battery, Cold Kettle
The cabin has plenty of stored energy, but the kettle refuses to heat while the background equipment keeps running. Investigate power limits without confusing watts with watt-hours.
Open caseOpen case → CASE 03The Misleading Battery Label
Two cabin owners bought complete, compatible systems labelled 100 Ah. One cabin loses power before morning, while the other succeeds. Inspect the voltage labels and actual energy, then choose a system for a twelve-hour night.
Open caseOpen case →These are fictional, simplified learning systems, not equipment recommendations. Our models show continuous power, energy storage and conversion losses with their assumptions disclosed.