Plan your power
Power station calculator
Build a daily energy budget, then find a capacity that fits.
What can it power?
Choose your devices and daily run time. Battery capacity needed = watts × hours ÷ 0.85. Peak running watts assumes all selected devices run at once.
These are planning estimates, not measured runtimes. Appliance startup surges, fridge duty cycles, CPAP humidifiers and charging losses can change demand. Check your device label and the listing’s surge limit.
Select a device to get started.
Runtime reference · 1,000 Wh at 85% usable energy
| Device | Running watts | Estimated hours |
|---|---|---|
| Phone | 15 W | 56.7 |
| Laptop | 60 W | 14.2 |
| Router | 40 W | 21.3 |
| CPAP | 45 W | 18.9 |
| Mini fridge | 50 W | 17.0 |
| Full fridge | 150 W | 5.7 |
| TV | 100 W | 8.5 |
| LED lights | 20 W | 42.5 |
| Coffee maker | 900 W | 0.9 |
| Microwave | 1000 W | 0.9 |
| Space heater | 750 W | 1.1 |
| E-bike charger | 500 W | 1.7 |
| Drill | 600 W | 1.4 |
Matching models are ranked by our shared spec- and buyer-rating-based score. How we rank.