Portable power, explained with real numbers
How much power do you need, and for how long?
Sizing guides and calculators for portable power stations and solar generators, built on manufacturer specs, public data and math you can check. No sponsored reviews.
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ToolPower Station Runtime CalculatorAdd your devices and see how long a station lasts, with the formula shown.
ToolSolar Panel Size CalculatorSun hours for every state and month, and how long your panels take to recharge a station.
GuideWhat size do I need?Four steps from your device list to the right capacity and output.
ToolCPAP Battery CalculatorHow many nights a power station runs your CPAP, using ResMed’s measured power use.
Latest articles
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Four 1,000 Wh class power stations compared on official specs: capacity, output, surge, weight, charging, solar input and cycle life. No paid rankings.
How we work: we don’t physically test products or accept paid reviews. Every figure comes from a manufacturer spec sheet, a public source or a calculation shown on the page. Read our method.