Power 20 - The Ultra-slim battery
Power 20 - The Ultra-slim battery
✔ Recharge your phone in just 1 hour
✔ Ultra-strong magnetic hold — even with a case
✔ Overheating and overload protection
✔ Battery level always visible
✔ Number 1 best-selling power bank in France and Switzerland by 2025
🎁 FREE OFFERS – Limited Time Only
✅ FREE 65W Super Charger wall plug (Value €39)
✅ FREE magnetic ring (value €12)
✅ FREE USB-C cable (value €19)
Couldn't load pickup availability
Description
Description
Power 20 – Ultra-thin, ultra-powerful
Extremely thin, packed with energy – fits in any pocket and lasts all day
At just 8 mm thick, the Power 20 remains compact and lightweight, ensuring your smartphone stays comfortable even while charging. Despite its ultra-slim design, it offers up to two full charges, ideal for long days on the go.
Advantages that make a difference:
- Secure magnetic attachment
The Power 20 magnetically attaches to your smartphone – like a backpack that snaps on with a click. No more tangled cables or constantly shifting: simply attach and charge. Fast charging with 20W Power Delivery
The integrated fast charging function ensures your device is ready to use in record time.
- Total versatility
Charge your device wirelessly or via cable, depending on your needs.
- Elegance and functionality
Our award-winning design ensures your smartphone stays not only charged, but also stylish.
LED charging indicator:
Easily monitor the battery level at a glance.
Fast and versatile charging:
- USB-C port: Charge your devices with a cable, ideal for iPads, portable speakers or headphones.
- Wireless charging (Qi): Place your AirPods, smartwatch or any compatible device to charge wirelessly.
Technical specifications:
- Weight: 120 g
- Thickness: 8 m
- Capacity: 5000 mAh
- Output power: up to 20 W
- Connections: USB-C + Wireless
Package contents:
- Power 20 – 5000 mAh Power Bank (up to 2 full charges for a smartphone)
- 15cm USB-C cable (value €10 – included)
- Super Charger (value €39 – free)
- Magnetic ring
(Allows for magnetic attachment – even for smartphones without a built-in magnet)
Important: Your smartphone must be compatible with wireless charging.
Compatibility:
- Starting with iPhone 12 (MagSafe magnet included in the phone)
- iPhone 8 to 11, Samsung and other brands: charge wirelessly and attach magnetically with the magnetic ring.
The magnetic ring is included in the pack – just stick it on and you're good to go!
Note: Some older models, such as the Samsung A series, do not support wireless charging. Therefore, check your device's Qi compatibility before use.
Don't let your battery slow you down! Get the Numa Tech Power 20 now and enjoy unlimited power for all your adventures.
Compatible smartphones
Compatible smartphones
The Power 20 works perfectly with all smartphones.
With our magnetic ring, charging efficiency and magnetic strength are increased by up to 30% .
Package contents
Package contents
Included items and ordering benefits:
- Power bank Power 20 with a capacity of 5000 mAh (up to 2 full charges depending on the device used)
- 15cm USB-C charging cable
- User manual
- A super wall charger with a capacity of 120w for fast battery charging.
- Magnetic ring
Why order from Numa Tech?
Why order from Numa Tech?
Order your Power 20 magnetic power bank and enjoy:
- fast delivery ,
- of German quality ,
- the convenience of keeping your devices always charged, wherever you are.
- With a customer service team that is available and attentive to your needs.
Delivery & Returns
Delivery & Returns
Shipping
All orders are processed and shipped within 1 to 5 business days.
An email containing your tracking information will be sent to you once your order has been processed.
Returns
We are confident that you will love our Numa Tech games, but if for any reason you are not satisfied, we will give you a full refund, no questions asked!

Customer feedback
One power bank. All your devices. At the same time.
Recharge:
- 📱 Your smartphone via MagSafe / wireless
- 🎧 your wireless headphones
- ⌚ your Apple Watch
- 🔌 and another wired device thanks to the included cable
➡️ Charge up to multiple devices simultaneously , wherever you are.
Ultra-thin, to the point of being forgotten.
Attached to the phone, the Power 20 becomes a natural extension of the device.
Its sleek design preserves the smartphone's aesthetic appeal.
At only 8 mm thick , the Power 20 fits in any pocket — and is always ready when your battery is low.
-
Approved for air transport
-
Fully recharge your smartphone in 1 hour
-
Powerful magnetic attachment, even with a case
-
Digital display showing battery level
What our customers think
100% satisfaction guaranteed or your money back
We're confident you'll love your Numa Tech order. However, if for any reason you're not completely satisfied with your purchase, we'll give you a full refund, no questions asked, within 60 days of your order!
FAQ – POWER 20
Does the POWER 20 stay securely attached to the phone, even with strong vibrations?
Yes. The POWER 20 is designed to withstand significant vibrations and remains securely attached to your smartphone in all circumstances.
What does a capacity of 5000 mAh represent?
With the POWER 20, you can fully recharge some devices up to 4 times.
For comparison, an iPhone 13 Mini has a 2,438 mAh battery.
How long will it take to receive my order?
Your order is usually delivered within 10 to 12 business days.
Is my device compatible?
The POWER 20 is compatible with all iPhones as well as Qi-compatible Android smartphones (Apple, Samsung, Google, Huawei, etc.).
We also recommend using the POWER 20 case, specially designed to enhance magnetic adhesion, particularly on older models.
👉 Result: improved magnetic strength and increased charging efficiency of up to 30%.
What are the delivery charges?
What are the delivery charges?
Can I take the POWER 20 on a plane?
Yes. The POWER 20 is perfectly suited for travel and is permitted in the cabin, including on airplanes.
Does the POWER 20 work with Samsung phones?
Yes. The POWER 20 is designed to work with all smartphones.
For optimal compatibility and attachment to Samsung devices, we recommend using the POWER 20 case.
What if I am not satisfied with the product?
What if I am not satisfied with the product?