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Black rectangular phone cooler with RGB lighting and spring clip, 3.36 by 2.32 by 1.69 inches

Stjiatu DL20 Phone Cooler 27W Semiconductor RGB

SKU CH-BGAQ-14X21

A 27 W semiconductor cooler drops phone temperature by 25 °C in eight seconds with a retractable clip fitting most handsets

  • ColorBlack
  • Dimension3.36 L x 2.32 W x 1.69 H inches
  • Package ContentsLight Kit
  • 27 W semiconductor cooler drops phone temperature by up to 25 °C in 8 seconds
  • 60 centrifugal fins and 36 × 36 mm chip move heat away fast during gaming
  • Retractable clip spans 2.83–3.66 inches with silicone pads for secure, damage-free grip
  • Three modes — silent, freezing and AI thermostat — match cooling to workload
  • Weighs 90.7 g and measures 3.36 × 2.32 × 1.69 inches for pocket-friendly portability

27W Semiconductor Phone Cooler

The Stjiatu DL20 uses a 27 W semiconductor module with 60 centrifugal fins to pull heat away from smartphones during gaming or live streaming. A retractable clip spans 2.83 to 3.66 inches and grips most handsets with non-slip silicone pads. The unit weighs 90.7 g and measures 3.36 by 2.32 by 1.69 inches. RGB LEDs add lighting while the cooler runs.

Sustained-load behaviour

Three operating gears let the user match cooling to workload. Silent mode runs quietly for light tasks, freezing mode drives the semiconductor at full power for maximum heat removal, and AI mode adjusts output automatically based on device temperature. The supplier states a 25 °C drop within eight seconds and a lowest reachable temperature of -12 °C when powered above 20 W.

Upgrade context

This cooler replaces passive stands or clip-on fans that rely only on airflow. The semiconductor element provides active refrigeration, so the jump is worth it when a phone throttles, blacks out or becomes uncomfortably hot during extended sessions. It is not for users who need a built-in power bank, a MagSafe-compatible mount or a cooler powered directly from the phone’s own battery.

Highlights

  • 27 W semiconductor cooler drops phone temperature by up to 25 °C in 8 seconds
  • 60 centrifugal fins and 36 × 36 mm chip move heat away fast during gaming
  • Retractable clip spans 2.83–3.66 inches with silicone pads for secure, damage-free grip
  • Three modes — silent, freezing and AI thermostat — match cooling to workload
  • Weighs 90.7 g and measures 3.36 × 2.32 × 1.69 inches for pocket-friendly portability

Specifications

BrandStjiatu
ModelDL20
Part Number0001
ColorBlack
Dimension3.36 L x 2.32 W x 1.69 H inches
Package ContentsLight Kit

Questions about this item

How loud is the 60-fin centrifugal fan when the 27 W semiconductor runs continuously on freezing mode?

The cooler offers three gears; silent mode keeps noise low for everyday use, while freezing mode runs the 60 centrifugal fins at full power for maximum heat removal.

Which power source must I already have to drive the 27 W cooling module?

A USB-C charger or power bank capable of at least 20 W output is required to run the semiconductor at its rated 27 W.

Will the 2.83–3.66 inch retractable clip fit my phone if I keep a rugged case on it?

The spring-loaded clip expands from 2.83 to 3.66 inches and includes non-slip silicone pads, so it grips most phones even with moderate cases.

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