What can it run?
What it will actually run.
Check the devices you'd actually use, and see a range of hours — not one fake precise number.
Estimator
Pick your devices and a capacity class
We assume about 85% of the rated capacity reaches your devices, so we show a range, not a single hour.
What are you running?
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Battery capacity
Estimated running time
3.7–4.2hours
Mid capacity (700 Wh) at 150 W combined, assuming about 85% of the rated capacity reaches your devices.
Startup surge on a fridge compressor can trip a small inverter even when average watts look fine.
At a glance
Will it cover this device?
A quick static read before you build your own combination above.
| Device | Typical watts | Surge note | Entry | Mid | Home-backup |
|---|---|---|---|---|---|
| Fridge (average cycle) | 100 W | Compressor startup can spike 2–3× the running watts. | No | Tight | Yes |
| Wi-Fi router | 10 W | No meaningful surge. | Yes | Yes | Yes |
| LED lights (4) | 40 W | No meaningful surge. | Tight | Yes | Yes |
| Laptop | 60 W | Steady draw; match the port's USB-C or AC wattage to your laptop. | Tight | Tight | Yes |
| CPAP (no humidifier) | 40 W | Usually minimal — check your machine's label. | Tight | Yes | Yes |
| Mini cooler | 50 W | Real compressor surge, but smaller than a full-size fridge. | Tight | Tight | Yes |
Assumes about 85% of rated capacity reaches your devices. CPAP: check your machine's label — this is a watt estimate, not a medical recommendation.