WattRoadRuntime planner
How long will a 1,000 Wh power station last?
Estimate 1,000 Wh battery runtime for your devices. Select a setup, compare 500–2,000 Wh capacities and work through an overnight energy budget.
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Select the devices you want to run
Use the selector below to explore different loads. Each wattage is an illustrative planning value, not a specification for all devices of that type. For a buying decision, replace these examples with measurements in the main calculator.
100 W · 800 Wh estimated usable energy
Illustrative loads, 80% usable energy, no recharge. Check the station’s output and ports separately. This is an estimate, not a product test.
1,000 Wh runtime at different loads
The calculation is nominal battery Wh × 0.8 ÷ average load W. For 1,000 Wh, this budgets 800 Wh to the devices. The 20% allowance is our comparison assumption, not a measured efficiency or a guaranteed reserve.
| Combined draw | Estimated duration |
|---|---|
| 40 W | 20 h |
| 60 W | 13.3 h |
| 100 W | 8 h |
| 200 W | 4 h |
| 500 W | 1.6 h |
| 1000 W | 0.8 h |
An overnight budget: devices do not all run for the same time
Suppose a laptop draws an average 60 W for four hours, two lights use 20 W together for five hours, and a fan uses 40 W for eight hours. Their energy use is 240 + 100 + 320 = 660 Wh. At 80% usable energy, the calculated nominal minimum is 825 Wh.
A 1,000 Wh battery has 140 Wh left in this estimated 800 Wh device budget. That is room within the calculation, not a promise that it will cover every overnight condition. If all three loads overlap, the station must also deliver at least 120 W continuously and meet the individual port requirements.
500 Wh, 1,000 Wh or 2,000 Wh?
At the same steady 100 W load, the three capacities estimate to four, eight and sixteen hours respectively. If you need a full eight hours, a battery that just reaches eight hours on paper leaves no additional margin for a heavier load or different operating conditions.
Check the actual Wh in the model sheet: a 1,024 Wh battery is not exactly 1,000 Wh. At 100 W and the same assumption it estimates to 8.2 hours. Compare weight as well as energy if you carry the battery between campsites or vehicles.
Why heating loads drain a battery quickly
A hypothetical steady 1,500 W load consumes the 800 Wh budget in about 32 minutes, provided the station can supply that output. A kettle used for six minutes at an assumed 1,500 W uses 150 Wh at the device; it does not need to run for an entire hour to affect your budget.
A 1,000 Wh capacity does not mean a 1,000 W output limit. Check continuous output, surge duration, voltage and each port separately. Refrigerators cycle and motors can need a starting surge; use the refrigerator guide for those checks instead of treating them as steady loads.
What makes actual runtime different?
Inverter overhead is especially relevant with small AC loads. Temperature, battery condition, standby settings and changing device demand also affect the result. A station may shut off a low-load output automatically; check that setting if the equipment needs to stay on overnight.
These estimates assume no solar, car or wall recharge. Calculate the battery-only session first. Evaluate charging separately using the exact input limits, compatible equipment and the time when charging will actually be available.
Calculate your own setup
Choose devices and hours in the calculator, then open model details to compare the available capacity and output.
Choose my devices →Models to compare
Open the runtime tables and compare the same 100 W load across these three batteries. The difference shows how capacity affects runtime.
- BLUETTI Elite 100 V2 · 1,024 Wh · 1,800 W
- Jackery Explorer 1500 v2 · 1,536 Wh · 2,000 W
- Anker SOLIX C2000 Gen 2 · 2,048 Wh · 2,400 W
Common questions
Will a 1,000 Wh power station last 24 hours?
Only at a sufficiently low average load. With the 80% assumption, a 24-hour session requires an average of about 33 W or less, before adding extra margin. At 100 W the estimate is eight hours.
How long can it run a 60 W laptop?
At a steady 60 W and 80% usable energy, the estimate is 13.3 hours. A laptop’s average consumption varies; its charger rating is not necessarily its average draw.
Can a 1,000 Wh station run a 1,500 W appliance?
Only if its output and all connection requirements support that appliance. Capacity alone does not answer that question. If compatible and drawing a steady 1,500 W, the energy estimate is about 32 minutes.
Sources and calculation method
Source information was checked on the update date above. The numerical scenarios are WattRoad estimates, not hands-on product tests. The 80% usable-energy assumption is explained in our methodology. How we compare →
- U.S. EIA — measuring electricity ↗Definitions of W and Wh. Device loads and runtime scenarios here are WattRoad calculations, not EIA appliance specifications.