Power Station Calculator

Calculate Your Portable Power Station Needs

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Confused about Watts, Watt-hours, and Amps? You are not alone. Most people buy a power station that is either too small (and runs out of power) or too big (and wastes expense).

Stop guessing. Just click the items you plan to use below, and our tool will instantly calculate your average daily power usage and recommend the perfect battery size.

Choose only the appliances you will actually use on daily basis. Keep in mind that high power items like Hobs, kettles, and microwaves use a lot of energy and can push you into a heavier,

and more expensive power station.

Result: You are a WEEKENDER!

Your power needs are light. You would be perfect with the EcoFlow River 2 Pro.

We Recommend: EcoFlow River 2

Why? It's tiny, lightweight (3.5kg), and charges from 0-100% in just 60 minutes.

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£209.00 From EcoFlow

Result: You are a Weekender!

Description: You need enough power for a laptop, camera batteries, and perhaps a small 12V cool box for a night or two.

We Recommend: Jackery 500 v2

Why? The goldilocks size. It doubles the capacity of the smaller units but is still small enough to carry in one hand.

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£289 From Jackery

Result: You are a Road Tripper!

You are stepping up! You likely have a 12v compressor fridge running 24/7 and need to charge drones or laptops daily.

We Recommend: Anker Solix C800

Why? This is the new standard for 2026. It packs nearly 800Wh of power and has a flat top for stacking gear.

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Check Price on Amazon

Result: You are a Van Lifer!

This is the standard for off-grid living. You need to run a diesel heater, fridge, lights and a water pump for 3-4 days without plugging in.

We Recommend: Bluetti AC180

Why? It has a power lifting mode to handle high wattage spikes (like a kettle)

that would trip smaller batteries.

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£429.00 From Bluetti

Result: You are a POWER USER!

Because you use high-wattage appliances, you need a high-capacity unit like the Bluetti AC200L.

We Recommend: Bluetti AC200L

Why? It's a powerful battery. It has a dedicated high-current DC port specifically for van conversions.

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£1,099.00 From Bluetti

Result: You need a heavyweight workhorse!

You are running serious equipment. Whether you are operating heavy duty construction tools on a remote job site, welding, or powering a full off-grid cabin setup, you need massive capacity and a huge inverter.

We Recommend: Jackery Explorer 3000 v2

Why? With a huge 3600W output and a portable "suitcase" design, it easily replaces noisy, fume-heavy petrol generators for contractors while still serving as the ultimate plug-and-play backup for your home.

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£1,599.00 From Jackery

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Frequently Asked Questions

How do you calculate my result?

We sum up the “running wattage” of every item you selected (e.g. Phone Charger + Laptop + Fridge). We then automatically add a 15% safety buffer. This accounts for inverter inefficiency and other real-world losses, ensuring you don't run out of power when you need it most. For a deeper dive check out our: “How to Calculate Your Portable Power Station Size” guide along with the free downloadable worksheet.

Why do you recommend these specific brands?

We only recommend units we trust.
* EcoFlow River 2: Best for "Light Users" (Phones & Lights).
* Jackery & Anker: Best for "Medium Users" (Laptops, Drones & Fridges).
* Bluetti AC200L: Best for "Heavy Users" (Kettles, Hair Dryers & Tools).

What if I have a medical device (CPAP)?

We have included typical CPAP power draw in our calculations. However, we always recommend the medium-tier (Jackery 500 v2 or larger) for medical devices to ensure you have at least 2 nights of backup power.

Want to see the full comparison?

The calculator gave you a quick recommendation, but if you want to see how that unit compares to other competitor (brands like Anker, Jackery, and Bluetti), check out our deep-dive guide.

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