Home Backup Portable Power Station for Power Cuts

How long does a portable power station last during a power cut?

Divide the power station's capacity (in Wh) by your appliances' consumption, then subtract about 15% for losses. Some benchmarks:

For a power cut lasting several days, choose an expandable power station with expansion batteries, or pair it with solar panels.

The UPS function: no interruption

Some power stations work as an uninterruptible power supply: left plugged into the mains, they power your devices continuously and switch to battery within a few milliseconds if the power goes out. Your internet router, desktop computer, aquarium or freezer keeps running. The switchover time is given on each product page; for medical equipment, always ask the device manufacturer for advice.

Portable power station or generator?

A generator has to run outdoors because of its exhaust fumes, is noisy and needs fuel and maintenance. A power station can be used indoors, starts instantly and recharges from an outlet or in the sun. For a household's needs during a power cut (keeping food cold, internet, lighting), it is simpler and safer.

Frequently asked questions

Can a portable power station be connected to the consumer unit?

Not directly. Connecting it to the home's electrical system requires a transfer switch installed by an electrician. The simplest option is to plug priority appliances directly into the power station with an extension lead.

Can a portable power station run an electric heater?

Only for a short time: a 1,500 W heater drains a 2,000 Wh power station in just over an hour. Its main role is to keep food cold and maintain internet and lighting.

Do I need to recharge the power station between power cuts?

A LiFePO4 power station loses very little charge when idle. Recharge it every three to six months if it has not been used, or leave it plugged in in UPS mode if your model allows it.