The quick formula
Use measured or estimated daily energy consumption when possible. If you only know running watts, runtime estimates will be rough because the compressor switches on and off.
For a constant 200W load at 85% efficiency: 1,024Wh ≈ 4.4 hours, 2,048Wh ≈ 8.7 hours, and 3,014Wh ≈ 12.8 hours. A real refrigerator may last longer if its average draw is lower than 200W.
Do not forget startup surge
The power station must also handle the compressor’s startup demand. Check the refrigerator and power station specifications rather than assuming the running wattage tells the full story.
FAQ
What BLUETTI size is good for a fridge?
Start by confirming startup watts. Then pick capacity based on how many hours of backup you want and whether other essentials will share the battery.
Compare Current BLUETTI Options
Prices, bundles and inventory can move quickly. Use the official store to verify the current deal before choosing a model.
Check BLUETTI Official Store ↗affiliate link