Worn around the neck, carried in the bag.

Trzebnica, Lower Silesia - four fans to wear, four packs to carry

Worn around the neck, carried in the bag.

Four fans that stay where they are put and four power banks that hold their rated capacity: a 10,000 mAh wireless slab, a 5,000 mAh two-in-one with a built-in cable and torch, a 45 W mini, and a keyring with the three common plugs built in.

See the neck and desk fans
Rated capacity, measuredHangs where you put itCharges two things at oncePacked in TrzebnicaRated capacity, measuredHangs where you put itCharges two things at oncePacked in Trzebnica

Carry one, wear the other

Fans on one side, packs on the other. Running time, delivered capacity and weight sit on every product page, taken from the unit kept on the bench rather than from the supplier sheet.

Slim 10000Mah Wireless Portable Power Bank With Multi Output Ports Black

A power bank is worth its rating, or it is a brick

Rated capacity is measured at the cell, not at the port, so a 10,000 mAh pack that delivers 6,000 mAh to a phone is behaving normally. What matters is how much it actually delivers, so every pack here is discharged into a phone with the screen on and the delivered charge recorded. The neck fans are weighed and worn for an hour to see whether the collar slips at a walking pace, and the desk fan is run at each speed with the meter beside it.

How these eight were chosen

What people ask before ordering

Capacity, cabins and cables

The four questions that come up most often, answered with the figures from our own discharge tests.

How much of the rated capacity reaches my phone?

Between about sixty and seventy per cent, which is normal for every power bank on the market: the rest is lost to voltage conversion and heat. What we publish is the delivered charge measured into a phone with the screen on, not the number printed on the cell.

Can I take a power bank on a plane?

Yes. All four packs are well under the 100 Wh cabin limit, so they travel in hand luggage rather than in the hold. Tape the contacts or keep the pack in its own pouch, and carry it in the cabin where the crew can see it if asked.

Will the neck fan stay on while I walk?

The collar is sprung to hold at a walking pace and sits over a shirt collar without pinching. It is not designed for running; for that we would point you at the handheld with the carabiner instead, which clips to a strap and does not move.

What if a port stops working?

Email us with the order number and a photograph of the port. A port that will not hold a cable, or a built-in cable that stops charging, is a defect and is handled under the two-year guarantee: we replace the pack rather than ask you to repair it.

What we will not print on a box

No capacity we have not measured

A number on a carton is a manufacturer’s claim. Every pack on this shelf was discharged into a real phone and the delivered charge written down, so the figure you read here is the one that came back from the test.

DOROTA BOŻENA DOLACINŚKA - close-up detail

The close-up: port, hinge, collar

A built-in cable is only useful if the strain relief survives being pulled out of a bag, so the joint is flexed two hundred times before a sample is accepted. Ports are checked for how firmly a plug seats, and the USB-C receptacle is inspected for the reinforced tongue rather than the folded sheet metal. On the neck fans the collar is set to a spring tension that holds at a walking pace without pinching, and the vents are angled at the face rather than the ear.

See the power bank shelf

Before it goes in the parcel

01

Discharged into a phone

Each pack is run into a phone with the screen on, and the delivered charge is what we publish.

02

Worn for an hour

Neck fans are worn at a walking pace to check that the collar holds without pinching.

03

30 days, rights intact

Unused devices can be returned within 30 days of delivery, with your statutory rights never limited.