Power Station vs Generator: Battery or Gas?

How we picked: published specs of the power stations in our catalog + how each technology works. We don't run hands-on tests, and we don't list gas generator models. Our method

Side by side

Topic	Portable power station	Gas generator
Indoor use	Yes: no exhaust, so it can sit inside a home, tent or van (follow the maker's ventilation and placement notes).	Never indoors or in a garage: engine exhaust contains carbon monoxide. Run it outside, away from doors and windows.
Noise	Quiet: cooling fans only, and they often stop at low load.	Engine noise whenever it runs; inverter generators are quieter than open-frame ones.
Energy source	Stored energy. Recharge from the wall, a car socket or solar panels.	Fuel (gasoline, propane or both). Runs as long as you keep refueling.
Long outages	Limited by capacity until you recharge; solar can top it up during the day.	Keeps going for days if you have fuel on hand.
Output	Set by the inverter: 100 W to 10,000 W in our catalog.	Larger generators reach higher outputs, useful for well pumps, central AC or many appliances at once.
Maintenance	Little: keep it charged per the maker's storage advice.	Oil changes, spark plugs, air filters and fuel stabilizer or draining for storage.
Starting	Press a button; it's also ready to act as backup the moment the grid drops on models that support it.	Pull or electric start, then a warm-up.

How big do power stations get?

The 218 power stations in our catalog store 150 Wh to 10,017 Wh, and 41 of them are rated for 3,000 W or more of continuous output. Capacity is the limit a generator doesn't have: divide it by your load to see the hours. A 3,000 Wh battery feeding a fridge that averages 80 W lasts about 32 h.

The most popular home-backup models (3,000 Wh and up) in our list:

Model	Capacity	Output	Cells	Weight	Wh/lb	Amazon link
Jackery Homepower 3600 Plus	3,584 Wh	3,600 W	LiFePO4	77.2 lb	46	Check price on Amazon
EcoFlow Delta Pro	3,600 Wh	3,600 W	LiFePO4	99 lb	36	Check price on Amazon
PECRON F3000	3,072 Wh	3,600 W	LiFePO4	63.3 lb	49	Check price on Amazon

When a generator still makes sense

Outages that last several days, where you can't recharge from solar.
Loads above what any battery in your budget can deliver, like a well pump with a large starting surge.
Job sites where noise is acceptable and an outlet to recharge isn't available.

When a power station makes more sense

Anything indoors: a CPAP in the bedroom, a fridge in the kitchen, a home office during an outage.
Campgrounds with quiet hours, vans and boats.
Occasional use: a battery doesn't need fuel stored for months or an engine kept in shape.

Next: work out your load with the size calculator or browse home backup power stations.

Questions people ask

What is a portable power station?

A portable power station is a rechargeable battery with a built-in inverter, so it has regular AC outlets as well as USB and 12V ports. You charge it from a wall outlet, a car socket or solar panels, then run devices from it without fuel, fumes or engine noise. The power stations on Benchwatt store from 150 Wh to 10,017 Wh.

How does a portable power station work?

Inside there is a battery pack (LiFePO4 or Li-ion cells), a battery management system that protects the cells, a charge controller for wall, car and solar input, and an inverter that turns the battery's DC into 120V AC. Capacity in watt-hours (Wh) is how much energy it stores; rated output in watts (W) is how much it can deliver at once. Some energy is lost turning DC into AC, so we count on about 85% of the rated Wh at the AC outlets.

How long do portable power stations last?

Two answers. Per charge: hours = capacity (Wh) × 0.85 ÷ device watts, so the median model here (1,024 Wh) runs a 60 W laptop for about 15 hours. Over its life: makers rate the battery in charge cycles before capacity drops to a stated level. LiFePO4 cells are generally rated for more cycles than other lithium-ion chemistries, and 177 of the 218 power stations we list use LiFePO4. Check each maker's cycle-life spec and warranty; we haven't measured either.