Thermabuild
Thermabuild | Portable Magnetic Smartwatch Charger Keychain with 1800mAh Battery – Wireless Charging Dock
Thermabuild | Portable Magnetic Smartwatch Charger Keychain with 1800mAh Battery – Wireless Charging Dock
Couldn't load pickup availability
This portable magnetic smartwatch charger is a keychain-sized wireless charging dock with a built-in 1800 mAh battery. It works as a compact power bank for your watch, so you can top up the battery on the go without needing a wall outlet.
Charge Anywhere
The integrated battery lets you charge your watch while traveling, commuting or during a busy day. The magnetic dock aligns the watch automatically, making it easy to attach and start charging, and the keychain design means it can clip onto your keys or bag so it is always with you.
Key Features
- Built-in 1800 mAh battery: charge your watch away from a power outlet.
- Magnetic alignment: the watch snaps into place for easy charging.
- 5 W wireless output: efficient wireless charging for daily top-ups.
- Keychain design: compact and lightweight at about 100 g.
- Three colors: black, white or pink.
Compatibility
Compatible with Apple Watch Series 4, 5, 6, 7, 8, 9, 10 and 11, SE and Ultra. Not compatible with Samsung or other smartwatches.
Specifications
- Product type: portable magnetic wireless watch charger
- Battery capacity: 1800 mAh
- Output power: 5 W
- Charging protocol: QC2.0
- Weight: approx. 100 g
- Charging cable: not included
- Colors: black, white, pink
A pocket-sized backup charger that keeps your watch powered wherever your day takes you.
Share

Fast & Free Shipping
Free shipping across the United Kingdom, delivered straight to your door.
30-Day Returns
Shop with confidence and enjoy easy returns within 30 days of delivery.
Customer Support
Our customer service team is here to help whenever you need assistance.
Secure Payment
Encrypted payments provide a safe and secure checkout experience.
Frequently asked questions
How long does delivery take?
Orders are typically processed within 1–2 business days. Delivery times may vary depending on the destination and shipping method. You will receive a tracking number once your order has been shipped.
Do you offer returns?
Yes. We accept returns within 30 days of delivery. Items must be unused and in their original condition. Please contact us before returning an item so we can provide the correct return instructions.
How can I track my order?
Once your order has been shipped, you will receive an email confirmation containing your tracking number and a tracking link.
What happens if I receive a damaged or incorrect item?
Please contact us as soon as possible if your order arrives damaged, defective, or incorrect. We will review the issue and arrange an appropriate solution, such as a replacement or refund.