Home battery vs power station – which is the smarter choice?

A home battery and a power station both store electricity, but you choose them for very different situations. A home battery is a fixed installation that stores solar energy for your whole house. A power station is portable and ready to use straight away – during a power cut, on a campsite or on a job site. Below you'll find out when each one is the smarter choice.

What is a home battery and when do you need one?

A home battery (also called a home energy storage system) is a permanently installed battery that stores electricity from your solar panels during the day and feeds that energy back into your home in the evening. Its main purpose is to make better use of your own solar power – especially now that the Dutch net-metering scheme (salderingsregeling) is being phased out. A home battery is connected to your meter cupboard (consumer unit) and has to be installed by an electrician.

A home battery is therefore worth considering if you have a lot of solar panels and a daytime surplus you'd like to use yourself in the evening. It isn't something you simply set down and take with you. UMATECH does not supply fixed home batteries with an inverter for the meter cupboard, but we do offer portable power stations and solar kits in our off-grid power category, which meet the same need for many people.

What is a power station and what do you use it for?

A power station is a portable battery with AC sockets, USB ports and often a 12 V output. You charge it from a wall socket, a solar panel or your car, and use it wherever you like: during a power cut, while camping, on a boat or in a campervan, or to run tools where there's no socket.

Brands such as Bluetti make power stations ranging from small, lightweight units to large models that can run a fridge or power tools for hours. For most households a power station is the practical choice: no electrician required, ready to use immediately and flexible to deploy.

Key specifications: W, Wh, outputs and charging options

When choosing, two figures matter most. Watts (W) are the power output: how demanding a device you can connect. Watt-hours (Wh) are the capacity: how much energy the unit stores, and therefore how long your device will run.

• Power (W): determines whether you can connect a device. A kettle or drill needs a lot of power; a phone or router needs very little.
• Capacity (Wh): determines the runtime. More Wh means power for longer, but also more weight.
• Outputs: 230 V AC socket, USB-A, USB-C (PD) and sometimes 12 V. Check that your devices are compatible.
• Charging options: mains, solar panel and car charger. Useful if you want to recharge during a power cut.

Scenarios and example calculations

A quick calculation makes it concrete. A 100 W device on a 500 Wh power station runs for roughly 500 divided by 100, so about 5 hours (slightly less in practice due to conversion losses). A 10 W router will stay online for almost two days on the same 500 Wh.

For camping and weekend use, a compact model such as the Bluetti EB3A (268 Wh, 600 W) is often enough for phones, lighting and a laptop. If you want to keep your fridge, central heating boiler and internet running during a power cut, you'll soon need a larger model such as the Bluetti AC200MAX (2048 Wh, 2200 W). If you want to bridge short outages for equipment in your meter cupboard or server room, also take a look at a UPS battery.

Safety and lifespan

Pay attention to the cell chemistry. Power stations with LiFePO4 (lithium iron phosphate) cells typically last 3,000 charge cycles or more and are safer and more stable than older lithium-ion cells. For daily or frequent use, LiFePO4 is the better choice, even if the model costs a little more. Use the unit within the specified temperature range and don't charge it in an enclosed, hot space.

Recommended models and advice

In short: if you have plenty of solar panels and want permanent storage for your whole house, a home battery installed by an electrician is the way to go. If you want flexible backup power you can use anywhere, a power station is the smarter choice. Not sure which size you need? Contact us or send a message via WhatsApp listing the devices you want to power, and we'll help you do the maths.

Frequently asked questions

How long can a power station run my fridge?

That depends on the capacity (Wh) and your fridge's consumption. A modern fridge uses around 1,000 to 1,500 Wh per 24 hours on average. A 2,000 Wh power station will therefore keep such a fridge running for about a day, provided the unit's power output (W) is sufficient.

Can I charge a power station with solar panels?

Yes, most power stations have a solar input. You connect a portable or fixed solar panel and charge without a wall socket – handy when camping or during a longer power cut. Check your model's maximum input power so that your panel is a good match.

Is a power station an alternative to a home battery?

For temporary or flexible power, often yes. A power station is ready to use straight away and can be moved around. As a replacement for a fixed home battery that supports your whole house it's less suitable, because it doesn't connect automatically to your meter cupboard. For backup power and individual devices, however, a power station is more practical.

What do W and Wh mean on a power station?

W (watts) is the power output: the maximum load you can connect at the same time. Wh (watt-hours) is the capacity: the total energy it can store. Put simply, W determines whether a device will work, and Wh how long it will keep working. Both figures matter when you choose.

Does UMATECH also sell fixed home batteries?

UMATECH focuses on portable power stations and solar kits, including from Bluetti. We don't supply fixed home batteries with an inverter for the meter cupboard. If you need flexible backup power or off-grid power for a shed, campervan or holiday home, we'll gladly help you find a suitable power station or solar kit.

Which Bluetti is right for a power cut at home?

To bridge a power cut with a fridge, central heating boiler and internet, choose a model with plenty of capacity, such as the AC200MAX (2048 Wh). For just phones, lighting and a laptop, a more compact model is enough. Not sure? Send us your list of devices via WhatsApp and we'll recommend the right size.