Promate 10000mAh Portable Power Bank with Built-In 20W USB-C In/Out Foldable Connector and 20W Lightning Foldable Connector, Fast USB-C Charging Port, LED Display - Blue / POWERUP-10DUO.BLUE / POWERUP-10DUO.BLUE

The Promate POWERUP-10DUO is a 10000mAh portable power bank in blue with two foldable connectors built into the body: a 20W USB-C connector and a 20W Lightning connector. A separate fast USB-C charging port and an LED display complete it. Nothing has to be carried alongside it, because the cables are part of the pack.

A foldable USB-C connector is built into the POWERUP-10DUO and delivers 20W. It folds out to meet an Android phone, a tablet or anything else on USB-C, then folds flat again afterwards. At 20W it is fast-charge territory rather than the slow trickle that integrated connectors used to mean.

A second foldable connector carries Lightning at 20W, so an iPhone plugs straight into the pack with no cable at all. Having both connector types on one bank is the point of the DUO name: mixed households stop sorting through cables to find the one that matches the phone in hand.

The built-in USB-C connector handles input as well as output, so the same fold-out arm that charges a phone is also what refills the pack itself. One connector doing both jobs is what allows the POWERUP-10DUO to travel with no cable in the bag at all.

Alongside the fold-out connectors there is a fast USB-C charging port on the body. It takes an ordinary cable, which means a second device can be charged at the same time as the one attached to a built-in connector, or a device that will not reach the fold-out arm can still be served.

An LED display reports the state of the pack as a readable figure rather than a row of dots that has to be interpreted. Knowing exactly what is left decides whether you top a phone up now or wait, which is the difference between arriving somewhere charged and arriving somewhere flat.

Capacity is 10000mAh, the size most people settle on for a bank that lives in a bag every day rather than one that comes out for trips. It is enough to keep a phone going through a long day of navigation, calls and photos without turning the pack itself into something heavy to carry.

Both connectors fold back into the pack when they are not in use, so there is nothing sticking out to catch on a bag lining or snap off in a pocket. Fold-flat design is what makes built-in connectors practical rather than fragile, and it is why the DUO needs no cable pouch.

This version of the POWERUP-10DUO is the blue model. Colour matters more on a power bank than it looks: a coloured pack is far easier to find in a dark bag or identify at a table where three identical black bricks are charging, which is a routine problem when travelling with other people.