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How Long Will a Jackery Run During a Power Outage? Fridge, Furnace Fan and Heater Runtimes
A Jackery runs a typical refrigerator for roughly 4 hours on a 1kWh station and about 21 hours on the 5,040Wh Explorer 5000 Plus, before conversion losses. How long a Jackery will run during a power outage comes down to one division: the station's capacity in watt-hours divided by the watts your appliances draw. This guide gives you that math, the appliance wattages behind it, and a model-by-model runtime table for the loads that matter most in a winter outage.
How to Calculate How Long a Jackery Will Run
Runtime in hours = battery capacity (Wh) ÷ load (W). A 2,048Wh station feeding a 500W load runs about 4 hours. Virginia Cooperative Extension (Virginia Tech) gives the matching energy formula for appliances: wattage × hours used per day ÷ 1,000 = daily kilowatt-hours.
Two adjustments keep the estimate honest. First, every power station loses some energy converting battery power to household AC, so real runtime is shorter than the raw division; treat every number in this guide as an upper bound. Second, many appliances cycle on and off. Virginia Tech's extension guide says that to estimate how many hours a refrigerator actually runs at its maximum wattage, you divide the time it is plugged in by three.
How Many Watts Do Winter Outage Appliances Use?
These are the typical wattages published by Virginia Cooperative Extension (Virginia Tech). Your own appliance's nameplate is always the better number if you have it.
| Appliance | Typical wattage | Notes |
|---|---|---|
| Refrigerator (frost-free, 16 cu ft) | 725W | Cycles on and off; about one third of the time at full draw, so roughly 242W on average |
| Furnace fan | 750W | The blower a gas furnace needs electricity to run |
| Portable space heater | 750–1,500W | The fastest way to drain a station |
| Water pump (deep well) | 250–1,100W | Check your pump nameplate |
| Microwave oven | 750–1,100W | Short bursts only |
| Laptop | 50W | Easy to run for a full day |
Jackery Runtime Table by Model
Here is how long each Jackery station would run each load on its own, using capacity from Jackery's spec pages and the wattages above, before conversion losses. The refrigerator row uses the one-third duty-cycle average (about 242W); the furnace fan row assumes the fan runs continuously.
| Station (capacity) | Refrigerator (~242W avg) | Furnace fan (750W) | Space heater (1,500W) |
|---|---|---|---|
| HomePower 1000 Plus v2 (1,024Wh) | ~4.2 hrs | ~1.4 hrs | ~0.7 hrs |
| Explorer 1000 v2 (1,070Wh) | ~4.4 hrs | ~1.4 hrs | ~0.7 hrs |
| HomePower 2000 Plus v2 (2,048Wh) | ~8.5 hrs | ~2.7 hrs | ~1.4 hrs |
| HomePower 3600 Plus (3,584Wh) | ~14.8 hrs | ~4.8 hrs | ~2.4 hrs |
| Jackery Explorer 5000 Plus (5,040Wh) | ~20.8 hrs | ~6.7 hrs | ~3.4 hrs |
Capacities: Jackery's HomePower 1000 Plus v2 page (1,024Wh), Jackery's Explorer 1000 v2 page (1,070Wh), Jackery's HomePower 2000 Plus v2 page (2,048Wh), Jackery's HomePower 3600 Plus page (3,584Wh) and Jackery's Explorer 5000 Plus spec sheet (5,040Wh).
Why a Space Heater Drains a Jackery So Fast
A space heater turns electricity straight into heat at 750–1,500W, so it empties a station several times faster than a refrigerator. On a 1kWh station a 1,500W heater lasts well under an hour, and it sits right at the 1,500W output limit of the Explorer 1000 v2. If staying warm is the priority, the better use of stored power is usually the furnace fan on a gas furnace, which moves heat the furnace is already making, or an electric blanket at 60–100W according to the same Virginia Tech list.
How to Make a Jackery Last Longer in an Outage
Run only what you need, and run it in turns. Keep the refrigerator closed so it cycles less, run the furnace fan in intervals rather than continuously, and charge phones and laptops while the station is already running something else. If you need more hours, add capacity: the HomePower 1000 Plus v2 expands to 11kWh and the HomePower 2000 Plus v2 to 12kWh with the Battery Pack 2000 Plus v2, and the HomePower 3600 Plus expands to 21kWh with the Battery Pack 3600. Our Jackery battery pack compatibility guide shows which pack fits which station.
Solar panels add hours back during the day. Browse Jackery SolarSaga solar panels or a ready-matched Jackery solar generator kit.
Which Jackery Should You Get for Winter Outages?
For a refrigerator, lights and phones through one night, a 2kWh station is the practical starting point. The HomePower 2000 Plus v2 (currently on pre-order, ships around December 7) gives you 2,048Wh and room to grow. If you want to keep a furnace fan and refrigerator going together for most of a day, step up to the HomePower 3600 Plus (currently on pre-order, ships around November 22) or the Jackery Explorer 5000 Plus (currently on pre-order, ships around November 28), which also runs 240V loads. For connecting a station to your home's circuits safely, read our Jackery transfer switch guide.
Compare every model in our Jackery portable power stations collection, or see current markdowns on Jackery deals. Urban Supply is an authorized Jackery dealer, every unit carries Jackery's full manufacturer warranty, and we offer free shipping on orders over $299, certain exclusions apply.
About the author: Jacky Chan is the founder of Urban Supply Inc, an online retailer of home appliances, fireplaces, power equipment and outdoor living products.
Related reading: Best Jackery for Home Backup · Jackery Explorer vs HomePower · Is the Explorer 5000 Plus Enough for Whole-Home Backup? · What Size Generator Do I Need?