How Long Will My Device Run on a Power Station?
The runtime formula: battery capacity in watt-hours multiplied by 0.85 (inverter efficiency), divided by device wattage, equals runtime in hours. Example: a 100W TV on a 1,000Wh power station runs for (1,000 × 0.85) ÷ 100 = 8.5 hours.
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Runtime Calculator
Enter your device wattage and your power station's watt-hour capacity. We apply the standard 0.85 inverter efficiency factor used across the industry.
Note: cycling appliances (fridges, freezers, AC units) draw their rated wattage only when the compressor is active. Real-world runtime is often 2–3× longer than this conservative estimate. High-draw devices (heaters, kettles) match the rated wattage closely.
Common Runtime Scenarios
We've pre-calculated the most-asked device-and-battery combinations so you can see the answer at a glance.
Fridge on a 1000Wh power station
About 5.5 hours of cycled runtime
See full breakdownCPAP on a 500Wh power station
Roughly 10–12 hours (one full night)
See full breakdownLaptop on a 300Wh power station
About 4 charges or ~8 hours of plugged use
See full breakdownSpace heater on a 1500Wh power station
About 50 minutes on high (1500W)
See full breakdownWindow AC unit on a 2000Wh power station
About 3 hours on a 5,000 BTU unit
See full breakdownRecommended Power Stations
Three real, tested units that cover the most common runtime needs — small, mid, and whole-house backup.
Jackery Explorer 1000 v2
1,070Wh LiFePO4. Runs a mini fridge ~6 hrs, a CPAP all night, or charges a laptop ~14 times.
Anker SOLIX C1000
1,056Wh LiFePO4 at 28 lbs. 58-minute fast charge, 1,800W output. Best value in its class.
Bluetti AC200L
2,048Wh LiFePO4 with 2,400W output. Handles a window AC, full-size fridge, or a space heater.
Power Station Sizing Calculator
Going the other direction: list your devices and we'll size the battery you need.
Runtime Estimator (by model)
Pick a specific power station + appliance from our database for a model-accurate estimate.