EcoFlow sells charge speed, Bluetti sells price per watt hour and cycle life. Both claims tested against each company’s published specs, computed from usable watt hours at 85 percent efficiency with the electricity counted. One result goes against the brand we earn on.

Both brands ship LiFePO4 now, so the old chemistry argument is dead. What remains is a capacity floor difference, a pair of warranty policies that both contradict their own product pages, and an honest cost per delivered kilowatt hour that counts the electricity.

A ten step framework for choosing a portable power station, from totalling your real loads to the inverter efficiency step every buying guide skips. Includes a decision table, a spec checklist and what I would buy at each budget.

The full Bluetti lineup costed the honest way: usable watt hours at 85 percent inverter efficiency, cycles stated to a capacity floor, and a two term cost per delivered kilowatt hour that counts the electricity as well as the hardware.

A switching guide organised by problem, not by ranking. Cost per delivered kWh, cycle life to a stated capacity, warranty clauses that void cover, weight per usable kWh, and the cases where a standby generator or a plain UPS beats a power station.