Therm-ic S-Pack 4000 B battery pack for heated socks
Två högkapacitetsbatterier med Bluetooth och USB-C-laddning till kompatibla värmestrumpor.
- Temporarily out of stock - more on the way
Product description
More time with warm toes. S-Pack 4000 B gives your heated socks plenty of power for cold days on the cross-country trails or the slopes. The package includes two rechargeable batteries, one for each sock.
Choose between three heat settings using the button on the battery. The indicator lights show which level you are using. With Bluetooth and the Therm-ic Heat Control app, you can fine-tune the heat directly from your phone, without having to access the batteries under your clothing.
The batteries attach to the sock cuffs with snap buttons. The compact housing is splash- and dust-resistant, and the USB-C connection makes charging convenient. The included USB-C charger can charge both batteries at the same time.
Compatibility: Fits Therm-ic heated socks with S.E.T. or Fusion technology, as well as Sidas Ski Race S.E.T. Socks are sold separately.
Runtime and charging
| Heat setting | S.E.T. socks | Fusion socks |
|---|---|---|
| Low | Up to 20 hours | Up to 23 hours |
| Medium | Up to 8 hours | Up to 10 hours |
| High | Up to 6 hours | Up to 7 hours |
Runtime is affected by sock model, temperature, selected heat setting, and battery condition. Charging time is approximately 5 hours.
Storage: Disconnect the batteries from the socks before washing and storage. For longer periods without use, store them switched off and approximately half-charged in a cool place, around 5-20 °C.
Pairs well with
Save up to 20% on larger purchases
The more you shop, the higher the discount you receive:
- 10% discount on orders over SEK 2,000
- 15% discount on orders over SEK 4,000
- 20% discount on orders over SEK 8,000
The discount is applied automatically at checkout - no code needed.
Shipping and delivery
Order before 2:00 PM on a non-holiday weekday and we will ship your order the same day. Delivery normally takes 1–2 business days after the parcel has left our warehouse.
Free shipping over SEK 499 - otherwise shipping costs SEK 49.
Returns and 365-day return policy
In addition to your statutory right of withdrawal, we offer a 365-day return period under our terms and conditions. The item must be unused, complete and in resalable condition. Original packaging and accessories must be included where applicable.
Would you like to return something? Our returns page explains the conditions and how to notify us of your return and arrange return shipping.
Waxing tips and help choosing the right products
In Vallaboden you’ll find practical guides and tips on ski waxing, ski care, and steel edge tuning - for both cross-country and alpine skiing.
Not sure which wax or tool you need? Contact us, and we’ll help you find the right option for your skis and your skiing.
Therm-ic S-Pack 4000 B battery pack for heated socks