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Size continuous AC from the pump’s published running amps × volts. Locked-rotor / start amps (LRA) must come from your pump plate or maker sheet—many popular models publish running amps only. Dedicated battery-backup sump systems are a different path than plugging an AC pump into a portable power station.

Hours ≈ battery Wh ÷ the modem+router (+ONT) stack’s named watts. Cite ARRIS / NETGEAR / ASUS / TP-Link / Nokia figures. DC mini-UPS vs AC portable power station—arithmetic only, not an uptime test.

Hours ≈ battery Wh ÷ the chest freezer’s cited running watts (or V×A from the rating plate). Size continuous AC and surge for compressor start—EnergyGuide kWh shows duty cycle, not a lab overnight test.

Hours ≈ battery Wh ÷ the charger’s cited AC input watts. Pure-sine AC for the OEM charger plug only—arithmetic from Pride / UPG / Lester / ACI manuals, not a medical claim.

Manufacturer compare of EcoFlow DELTA 2 (1,024 Wh / 1,800 W expandable LFP) vs RIVER 2 Pro (768 Wh / 800 W; Shopify sold out)—solar, charge, and class notes.