Find and Compare Power Stations by Real Value

Runtime Calculator

Enter the watts used by a device. Runtime estimate uses 85% usable efficiency because inverters waste some power.

What Size Power Station Do You Need?

Choosing the right portable power station comes down to how much energy you need (watt-hours) and what you plan to run. Smaller units are great for charging devices and light use, while larger models are designed for appliances and backup power during outages. As a rule of thumb, always size slightly higher than your minimum needs to account for power loss, surge demands, and longer runtimes.

• 100–300Wh: Ideal for phones, laptops, cameras, and small electronics.
• 300–700Wh: Good for camping, lighting, routers, and CPAP machines.
• 700–1500Wh: Can handle mini fridges, TVs, and short outages.
• 1500Wh+: Best for full-size refrigerators and home backup.

Fridge Runtime Reality

Refrigerators cycle on and off, typically using 100–200 watts when running, with higher startup surges. Because of this, runtime varies based on usage and efficiency.

A 1000Wh power station usually runs a fridge for about 6–10 hours. Larger 2000Wh+ units can often last overnight, especially if the fridge stays closed. Inverter losses (10–15%) and ambient temperature also affect real-world performance.

Quick Buying Tips

• Check AC watts: Capacity tells you runtime, but AC output tells you what it can actually power.
• Watch surge watts: Refrigerators, pumps, and tools may need extra startup power.
• Consider weight: Big batteries are useful, but not always fun to carry.
• Look at $/Wh: Lower cost per watt-hour usually means better battery value.
• Prefer LiFePO4: It is usually better for long-term ownership and frequent use.

Simple Rule of Thumb

For emergency home backup, buy more capacity than you think you need. For camping and travel, balance runtime against weight. The best deal is not always the cheapest unit — it is the one that matches your actual use without wasting money.