Published : 2026-11-11

Fairy lights with no plug socket: power bank, USB or solar?

Categories : Exterior , Interior , New features , Techno

The Guirled Journal · How-to guide

Fairy lights with no socket:power bank, USB or solar?

Three ways to light up fairy lights away from a socket, with their run times and their limits.

6 min readRun time chart

The socket is always on the wrong side: behind the sofa when the tree is by the window, missing from the balcony, nowhere to be found in the middle of the table. The good news is that fairy lights can do perfectly well without one.

There are three options: a power bank, a USB port and solar. Here is what each one can do, with its run times and its limits. Guirled has designed its lights in France since 2016 and guarantees them for 3 years.

Power bank, USB or solar: which option with no socket?

The answer mostly depends on the place. Indoors, a power bank; outdoors, the sun; and USB whenever a device is close by.

	Power bank	USB port	Solar
For which lights	Indoor cotton ball and Mini LED lights	Indoor cotton ball and Mini LED lights	Solar cotton ball lights, festoon lights, outdoor Mini LED
Where	Anywhere in the house: tree, table, shelf, vase	Near a computer or a charger, in the car, in a campervan	Garden, patio, balcony, pergola
Run time	6 to 100 hours depending on the lights and the brightness	For as long as the port is powered	Up to 8, 16 or 20 hours depending on the model, in summer
Recharging	By USB, cable supplied	None	By itself, through the panel
The limit	Needs recharging now and then	A short cable to the device	The panel has to see the sun

Run times as stated by Guirled. The detail follows, option by option.

How long do fairy lights last on a power bank?

Our 10,000 mAh power bank was developed for our indoor lights. Plug the lights in by USB, tuck the power bank behind the tree or in a basket, and the socket stops being an issue.

Lights	25% brightness	50% brightness	100% brightness
16 cotton balls	100 hrs	50 hrs	25 hrs
24 cotton balls	70 hrs	35 hrs	17 hrs
32 cotton balls	50 hrs	25 hrs	12 hrs
Mini LED 10 m (100 LEDs)	50 hrs	25 hrs	12 hrs
Mini LED 20 m (200 LEDs)	25 hrs	12 hrs	6 hrs

Maximum run time stated for lights in the Classic version. With remote-controlled or Wi-Fi lights, allow 20% less. In plain terms: at 50%, a 32-ball set runs for 25 hours, that is five 5-hour evenings before recharging.

10,000 mAhof capacity, in a compact format that slips into a bag

2 USB-A portsfor the lights; recharging is by USB-C or micro USB

4 levelson the charge indicator: 25, 50, 75 and 100%

3 yearsof guarantee, like all our lights

Can you plug fairy lights into a USB port?

Yes: all our indoor lights end in a USB plug. The mains adapter is supplied, but nothing says you have to use it.

Blue and green cotton ball fairy lights resting on a wooden shelf

Into a charger or a computer

The USB plug goes into a phone charger or a computer. Handy on a desk, a shelf or a bedside table.

2 metre USB extension cable for Guirled lights

With a USB extension

There is a socket, but too far away? The 2 m USB extension cable gives you up to 4 m of cable before the first ball.

For our indoor cotton ball and Mini LED lights.

Cotton ball fairy lights hung inside a campervan

In the car or the campervan

The USB car adapter powers up to two sets of lights in a car or a motorhome.

And outdoors: how long do solar fairy lights stay on?

Outdoors, the best socket is the sun. The panel charges the battery by day, and the lights come on by themselves at nightfall.

Model	Stated run time	Good to know
Solar cotton ball lights	Up to 8 hours	16 or 32 balls, IP55 waterproof, two brightness levels
Solar festoon lights, 16 LEDs, 7.5 m	16 hours at 50%, 8 hours at 100%	Can also run from the mains (adapter sold separately)
Solar festoon lights, 32 LEDs, 15 m	8 hours at 50%, 4 hours at 100%	A single panel for the full 15 m
Solar Mini LED, 20 m	Up to 20 hours	Mains adapter included, for winter
Nomade lamp	12 hours at 50%, 6 hours at 100%; up to 40 hours after a USB-C charge	Carried by its handle, IP55 waterproof

Maximum run times stated for summer, with the panel in the sun. In winter the days are shorter and the lights stay on for less time: that is normal. To get the best from the panel, see our guide to installing a solar light outdoors.

Tree, table, balcony: which option for which spot?

Six everyday situations, and for each one what really works.

Christmas tree lit with Mini LED lights in a living room

By the Christmas tree

Plug the lights into the power bank and hide it at the foot of the tree, behind the presents. A 20 m Mini LED runs for 12 hours at 50%.

What length for which tree? Our size chart by height.

Festive table decorated with glowing cotton balls between the glasses

In the middle of the table

No cable should cross the room: the power bank hides under the table runner or in a basket, and the lights wind between the glasses.

Alongside, our rechargeable LED candles: over 10 hours per charge.

Mini LED lights glowing inside a glass bottle

In a vase or a jar

Slip the lights into the glass and place the power bank just behind: not a cable in sight.

Solar panel for fairy lights staked in a pot, in front of a railing decorated with glowing balls

On the balcony

No outdoor socket? Go for solar ball lights or festoon lights and stake the panel in a planter, on the sunniest side. On a north-facing balcony, it will charge poorly.

Solar Mini LED lights laid along a garden border

In the garden or on the patio

The 20 m solar Mini LED follows a path, a flower bed or a railing. Its separate panel goes wherever the sun is.

Glowing Guirled Nomade lamp held by its handle at dusk

Pretty much anywhere

The Nomade lamp recharges in the sun or by USB-C and is carried by its handle, from the patio to the far end of the garden.

What mistakes should you avoid with no socket?

Looking for battery-operated lights that take AA cells: we do not make them. A power bank recharges: no more batteries to buy or throw away. We cover this in our pitfalls to avoid when buying string lights.
Plugging solar lights into the power bank: it is designed for our indoor lights, cotton ball and Mini LED.
Leaving the lights plugged in once switched off: unplug them from the power bank to keep the charge.
Putting the solar panel in the shade or behind glass: it charges poorly.
Relying on solar alone for a long winter evening: the festoon lights and the solar Mini LED can then run from the mains.

Fairy lights with no socket: your questions

How do you run fairy lights without a plug socket?

Indoors, plug them by USB into a power bank: 6 to 100 hours of run time depending on the lights and the brightness. Outdoors, choose solar lights, which recharge by themselves during the day.

How long do fairy lights last on a power bank?

With the Guirled 10,000 mAh power bank, at 50% brightness: 50 hours for 16 cotton balls, 35 hours for 24 balls and 25 hours for 32 balls; 25 hours for a 10 m Mini LED and 12 hours for a 20 m Mini LED. Allow 20% less with remote-controlled or Wi-Fi lights.

Does Guirled make battery-operated fairy lights?

Not with disposable batteries. Our indoor lights plug in by USB: into the mains with the adapter supplied, or into a rechargeable power bank. There are no batteries to buy or throw away.

Can you plug fairy lights into a computer or a charger by USB?

Yes. Our indoor lights end in a USB plug: they go into a phone charger, a computer or a power bank. In a car or a campervan, the USB car adapter does the same job.

Which cordless lights should you choose for a balcony?

Waterproof solar lights: solar cotton ball lights or festoon lights. Their panel stakes into a planter, on the sunniest side. On a north-facing balcony, it will charge poorly.

Is solar enough in winter, with no outdoor socket?

The lights come on, but for less time: the days are short and the panel gets less light. Face it due south, out of the shade. The Nomade lamp also recharges by USB-C: up to 40 hours of run time.