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The central portable-power class

A 1,000Wh power station stores about one kilowatt-hour. Your outlet sees less.

Battery reserve, conversion losses, temperature, and inverter self-consumption reduce usable AC energy. That is why a 1,000Wh label does not mean ten hours at a 100W load.

Research by the Power Station Station Editorial Team

1,000watt-hours ratedOften 750 to 850Wh usable through AC under a conservative planning model.

What 1,000Wh means in practice

8 to 10 hours100W continuous load
14 to 16 hoursour refrigerator planning profile
3 to 4 days18W router and modem

Ranges use 90% usable capacity and 88% AC conversion efficiency, then round conservatively. Refrigerator results also use a cycling load. These are calculations, not tests.

Four current records

The headline capacity is not the real comparison

The four launch records sit within 46Wh of each other. Continuous output, solar acceptance, carrying weight, expansion, UPS behavior, and the quality of published evidence matter more.

Source-checked 1kWh power station comparison
Product and fitCapacityAC outputEst. refrigerator runtimeDirect merchant
EcoFlow DELTA 3 Plus portable power station front and side view
EcoFlow DELTA 3 PlusPasses this planning profile		1,024 Wh1,800 W15.7 hoursCheck EcoFlow
Jackery Explorer 1000 v2 portable power station front view
Jackery Explorer 1000 v2Passes this planning profile		1,070 Wh1,500 W16.5 hoursCheck Jackery
BLUETTI Elite 100 V2 portable power station front view
BLUETTI Elite 100 V2Passes this planning profile		1,024 Wh1,800 W15.7 hoursCheck BLUETTI
Anker SOLIX C1000 Gen 2 portable power station angled front view
Anker SOLIX C1000 Gen 2Passes this planning profile		1,024 Wh2,000 W15.7 hoursCheck Anker

Runtime uses the visible refrigerator planning profile, 90% usable capacity, and 88% AC conversion efficiency. It is not a measured result. Merchant links are direct and exclude Amazon.

When to move above the 1kWh class

Move to a larger battery when one full day exceeds roughly 800Wh of delivered AC energy, when high-power loads run for long periods, or when recharge access is uncertain. Do not solve an inverter-output mismatch by buying only more capacity. Output and energy remain separate.

Use the outage load planner for several appliances, the runtime calculator for one load, or compare the 2,000Wh class. The EcoFlow versus Anker comparison isolates two different 1kWh priorities. For a combustion load, begin with the pellet-stove backup shortlist and its controlled-shutdown requirements.

Browse the portable power guide hub for every completed capacity, appliance, and electrical guide.

1kWh product source ledger

Important fields are tied to a specific source. Manufacturer claims, government guidance, calculations, and planning assumptions remain separate.

  1. US product page. Capacity, output, solar input, cycle life, weight, UPS, and warranty checked.

    official product page

  2. US product page. Capacity, output, peak, chemistry, cycle life, weight, and warranty checked.

    official product page

  3. Solar voltage, current, and 400W combined input limit checked.

    official support

  4. US manual. Capacity, chemistry, AC output, solar envelope, weight, UPS, and Power Lifting limitation checked.

    official manual

  5. Cycle-life claim and current merchant destination checked.

    official product page

  6. US page. Capacity, output, peak, input, weight, UPS, and charging claims checked.

    official product page

  7. Official US collection page. Current direct C1000 Gen 2 price checked.

    official product page

  8. Battery chemistry and cycle-retention claim checked.

    official support