Portable power stations, model by model
One page per model, each reading from the same registry of manufacturer specifications. Every page states what the unit suits, what should send you elsewhere, and the figures behind both. No prices, because a stale price is worse than none.
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Four brands, and why these four
Anker SOLIX, BLUETTI, Jackery and EcoFlow account for most of the demand in this category, and between them they cover the range from a unit you carry in one hand to something that backs up a house. They also publish their specifications properly, which matters for a site built on published figures.
Where a fifth brand appears in a comparison, it is because readers are genuinely weighing it against one of these four.