The Yellow Square is a portable USB soldering iron with adjustable temperature and 5 V power. The design is cordless, and the supplier states it has a built-in USB battery; the tip heats up within seconds. The light, ergonomic body suits small electronics repairs, DIY projects and jobs away from the workshop — in a garage, at a country house, under a car bonnet or at height.
Specifications
| Parameter | Value |
|---|---|
| Type | Portable USB soldering iron |
| Power source | USB |
| Supply voltage | 5 V |
| Temperature control | Yes |
| Design | Cordless, with built-in USB battery (per supplier) |
| Power sources listed by supplier | Power bank, laptop, car charger, USB port |
| Heat-up | Fast, ready within seconds |
| Body | Light, ergonomic |
| Condition | New |
What you get
- No need for a wall socket — 5 V USB power and a cordless design.
- No waiting around — ready to solder within seconds.
- Heat you can control — adjust the temperature to the part and solder.
- Comfort in tight spaces — a light, ergonomic body.
- A tool for the road — portable format for the garage, country house and call-outs.
Who it is for
Drivers fixing wiring under the bonnet, technicians on call-outs, country house owners, DIY hobbyists and anyone who needs a compact iron for occasional electronics repairs.
Who it is not for
People who solder every day and in volume: the supplier does not state power, temperature range, battery capacity or run time, so for long professional sessions choose an iron with known specs. Compatible tips are not listed either.
Applications and compatibility
Electronics repair, DIY projects, repairs in a garage, at a country house or on call-outs, work under a car bonnet, at height and in the field. Power is supplied over 5 V USB. The supplier does not claim compatibility with specific devices or tips.
What is in the box
The supplier does not list the contents, so check whether a cable and spare tips are included before ordering.
Questions and answers
How is the iron powered?
Over USB at 5 V. The supplier lists a power bank, laptop, car charger and USB port as power sources.
Does it have a battery?
The supplier describes it as cordless with a built-in USB battery, but capacity and run time are not given, so ask before buying if that matters to you.
How fast does it heat up?
According to the description, within seconds of switching on. An exact time is not given.
Can the temperature be adjusted?
Yes, temperature control is built in. The supplier does not state the range.
Reviews
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