01 Portable backup power / US guide
Portable power, sized for the situation.
Start with the load, not the logo. This field guide helps you work backward from a refrigerator, CPAP machine, Starlink Mini, RV, sump pump or laptop to the output, battery and charging features you actually need.
limits
runtime
fit
when the load is real.
Choose by the job in front of you
A portable power station is a battery, inverter, charger and control system in one enclosure. The useful question is not “which brand is best?” It is “what must run, for how long, and under what conditions?” Use the paths below to begin with a concrete decision.
The two numbers that decide most purchases
Continuous output covers the sustained demand. Surge or peak output covers short startup events from motors and compressors.
Watt-hours are the energy tank. Usable runtime is lower after inverter losses, conversion losses and the reserve you keep in the battery.
What to verify on a product sheet
| Field | Why it matters | What to write down |
|---|---|---|
| Continuous AC output | The sustained ceiling for the inverter. | W and, if relevant, voltage / outlet type. |
| Surge / peak output | Motor and compressor loads can need more at startup. | Peak W and the stated duration, if given. |
| Battery capacity | The starting point for runtime estimates. | Wh, plus whether the figure is nominal or usable. |
| AC, solar and vehicle charging | Recharge time depends on the input path. | Input wattage, connector, voltage range and included parts. |
| Ports and protection | Compatibility is more than total watts. | USB-C PD, 12V output, GFCI, pass-through and temperature limits. |
Specifications are only useful when they are attached to your load. A large battery cannot overcome an undersized inverter, and a powerful inverter does not create more energy. Keep those two constraints separate.
Useful next reads
Disclosure and editorial boundary
This site may earn a commission when a reader later uses an approved merchant link. We do not publish a merchant link until its campaign and destination are authorized. Editorial guidance is not a product test, rating or guarantee.
We do not claim to have tested products unless a page explicitly documents a real test. Brand comparisons in this first edition are decision frameworks built around verifiable specifications, not rankings.