Description
MEMO CX21 High Power 18W Magnetic Phone Cooler:
Key Features
- 18W high-power TEC semiconductor + air fan dual cooling
- Fan speed up to 6000 RPM for rapid heat removal
- 2-in-1 attachment — magnetic for iPhone, back clip for Android
- Reduces phone temperature by 5 to 7 degrees Celsius under load
- 4-mode RGB LED lighting for gaming aesthetics
- Matte ABS + aluminum alloy build — lightweight at 82g
- CE, FCC, and RoHS certified — safe and internationally approved
- Compatible with virtually all smartphones
Specifications
| Feature | Details |
| Model | MEMO CX21 |
| Cooling Method | TEC Semiconductor + Air Fan (Dual) |
| Input Power | 9V / 2A (18W) |
| Fan Speed | Up to 6000 RPM |
| Attachment | Magnetic + Back Clip (2-in-1) |
| RGB Lighting | Yes — 4 modes |
| Material | Matte ABS + Aluminum Alloy + TEC Chip |
| Weight | 82g |
| Certifications | CE / FCC / RoHS |
| Compatibility | iPhone MagSafe + All Android |
| Origin | Shenzhen, China |
| Package Size | 12 x 15 x 8 cm |
Product Description
MEMO CX21 — Stop Your Phone From Overheating During Gaming
If you play PUBG Mobile, Free Fire, or Genshin Impact for more than 30 minutes, you already know the problem. Your phone gets hot. The frame rate drops. The game lags. Your phone throttles performance to protect itself — and you lose. The MEMO CX21 is built to solve exactly this problem.
Dual Cooling — Semiconductor and Fan Working Together
Most cheap phone coolers only use a small fan to blow air. That is surface cooling at best. The MEMO CX21 uses a TEC semiconductor Peltier chip that actively pulls heat away from your phone’s processor, plus a 6000 RPM fan to exhaust that heat out. Two systems working at the same time means faster, deeper, and more effective cooling — bringing your phone temperature down by 5 to 7 degrees Celsius under real gaming load.
Built for Bangladesh Summers
Bangladesh temperature regularly crosses 35 to 40 degrees Celsius from March to October. Your phone is already fighting the ambient heat before you even start gaming. The MEMO CX21 gives your device the active cooling it needs to stay at peak performance no matter how long the session runs or how hot the weather gets.
Works on iPhone and Android — No Compromise
The magnetic attachment snaps instantly onto any MagSafe-compatible iPhone. For Android devices — Samsung, Xiaomi, Realme, OPPO, OnePlus — the universal back clip holds securely without any magnets needed. One cooler covers every phone you own.
Looks as Good as It Performs
The 4-mode RGB LED lighting adds a proper gaming setup aesthetic to your phone. Whether you are streaming on YouTube, playing in a tournament, or just gaming at home — the MEMO CX21 looks the part.
Lightweight and Easy to Use
At only 82g, you will barely notice it is attached. Plug in the USB-C power, clip it on, and it starts cooling immediately. No app, no setup, no complicated controls — just instant performance protection.

What’s in the Box?
- MEMO CX21 Phone Cooler x1
- USB-C Power Cable x1
- User Manual x1
What is the Price of MEMO CX21 Phone Cooler in Bangladesh?
The MEMO CX21 High Power 18W Magnetic Phone Cooler price in Bangladesh is approximately BDT 1,500 to BDT 2,500 depending on stock and import availability. Prices may vary with exchange rates and seller. Check Gadget Striker for the latest and most accurate BD price before ordering.
Buy MEMO CX21 Phone Cooler from Gadget Striker
Gadget Striker is a trusted gaming accessories and tech gadget seller in Bangladesh offering genuine products with fast delivery across Dhaka and all districts. Order the MEMO CX21 today and keep your phone cool, fast, and lag-free during every gaming session.
Frequently Asked Questions
Q1. Will the MEMO CX21 work with my Android phone? Yes. The universal back clip attachment works securely on all Android smartphones including Samsung, Xiaomi, Realme, OPPO, and OnePlus models.
Q2. Does it actually reduce phone temperature during gaming? Yes. The dual TEC semiconductor and fan cooling reduces phone surface temperature by 5 to 7 degrees Celsius under real gaming load, preventing throttling and frame rate drops.
Q3. What power source does it need? It requires a 9V/2A (18W) USB-C power input. You can use a fast charger, power bank, or laptop USB port that supports 18W output for full cooling performance.
Q4. Is it safe to use on my phone? Yes. The MEMO CX21 is CE, FCC, and RoHS certified, meaning it meets international safety and electromagnetic standards. It does not interfere with your phone hardware.
Q5. Can I use it while playing and charging my phone at the same time? Yes. You can use a separate charger on your phone while the CX21 cools it via its own USB-C cable — both work simultaneously without any issue.



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