Description
THERM-IC S-PACK 4000B – BLUETOOTH RECHARGEABLE BATTERIES FOR HEATED SOCKS
The Therm-ic S-Pack 4000B batteries provide long-lasting, adjustable warmth for compatible Therm-ic heated socks. Offering up to 23 hours of heating time, Bluetooth connectivity and three adjustable heat levels, these rechargeable batteries are designed to keep your feet comfortably warm during skiing and other cold-weather activities.
With Bluetooth technology and the Therm-ic Heat Control App, you can conveniently manage your heating settings directly from your smartphone. Three intensity levels allow you to customize the warmth according to your activity, personal comfort and outdoor conditions.
Compact and durable, the S-Pack 4000B batteries feature a splash- and dust-resistant construction designed for winter adventures. Their secure press-stud fastening system allows easy attachment to compatible Therm-ic heated socks, while USB-C charging provides a practical way to recharge both batteries simultaneously.
Each package includes two S-Pack 4000B rechargeable batteries and a USB-C charging cable. Compatible with Therm-ic heated ski and outdoor socks featuring S.E.T.® or Fusion technology, these batteries deliver extended heating performance for long days on the mountain.
Product Information
Key Features
Heating Time
Heating duration varies depending on the selected intensity level.
| Heat Level | Maximum Heating Time |
|---|---|
| Level 1 | Up to 23 hours |
| Level 2 | Up to 10 hours |
| Level 3 | Up to 7 hours |
Compatibility & Package Contents
The S-Pack 4000B batteries are designed for compatible Therm-ic heated ski and outdoor socks equipped with S.E.T.® or Fusion heating technology.
Package includes:
- 2 Therm-ic S-Pack 4000B rechargeable batteries
- USB-C charging cable for simultaneous charging of both batteries
For optimal battery performance and lifespan, use a 5 V / 2 A (10 W) USB power adapter.
Heated socks and USB power adapter are sold separately.
Battery Care & Maintenance
- Store batteries in a cool place between 5°C and 20°C (41°F to 68°F).
- Keep batteries approximately half charged before extended storage.
- Charge and discharge the batteries regularly to maintain performance.
- Disconnect batteries from heated socks before storage or cleaning.
- Clean the batteries using a soft cloth.
- Use a 5 V / 2 A (10 W) USB power adapter for charging.