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Therm-ic PowerSock S-Pack 1200 - 2 Pack

Therm-ic PowerSock S-Pack 1200 - 2 PackTherm-ic PowerSock S-Pack 1200 - 2 Pack

Therm-ic PowerSock S-Pack 1200 - 2 Pack

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The S-Pack 1200 is the most common battery used by our customers, making it the most popular among thousands of winter sports enthusiasts.


  • Warm feet for up to 14 hours
  • Pack comes with a USB charger
  • Wall charger not supplied S-Pack batteries are suitable for use with the Therm-ic PowerSocks heated socks

Important note:
  • The S-Pack battery must be charged before using them for the first time.
  • Preparing the USB wall plug universal charger (optional).
  • Slide your country-specific adapter into the slot on the back of the charger until it locks in with an audible click.
USB cable charging process:

  • 1. Plug the USB cable into the USB port. The charge indicator (2.2) will light up green. Next, you plug the charging connectors of the cable into the batteries S-pack (2.4). Please check the illustration on the charger to ensure proper orientation. The S-Pack battery can be charged in any operating mode. The charging process will start automatically and the charge indicator (2.2) will light up in red during charging.

  • 2. Once the S-Pack batteries are fully charged, the charging process is automatically concluded and the LED on the charge indicator (2.2) will switch back to green.

  • 3. LED blinking on USB S-Pack charger between green and red when charge above 95%. LED stays green when fully charged.

  • 4. Remove both S-Pack batteries from the charging shaft.

  • 5. After the S-Pack batteries have been charged, they are automatically in POWER OFF mode.

    Important note:

    • Recharge the S-Pack battery after each use. This extends the service life of the batteries and ensures that the device is always ready for use.

    • The battery consists of lithium ion cells and can be

    charged in any state. For this reason, the battery does not need to be fully discharged before charging.

    • When starting the charging process, the S-Pack battery can be in any operating mode (POWER OFF, IN USE)

    • The full charging capacity of the S-Pack battery can only be conserved if the S-Pack battery are removed from the charging station after the charging procedure is complete.

  • • Wear the heatable sock.
  • • Push the S-Pack battery on to the snap fasteners until they audibly lock into place (3.2).
  • • The S-Pack battery can be controlled with button (1.3) or with a iOS and Android app (only for S-Pack Bluetooth® enabled).

  • • Do not allow the highest heat level to be switched on for more than a few minutes at a time. This could produce too much heat during operation, which may cause burns.
  • • Always set S-Pack battery to low or moderate heat levels to maintain comfortable foot warming (heating should be almost undetectable).
  • • The optimum heat output is only reached when the socks, boots or soles are dry.
  • • Never used the heatable sock and the heatable insole together; this can result in too much heat - risk of burning!

    Information about Therm-IC S-Pack Battery Styles:

    S-Pack without bluetooth® The S-Pack battery has 4 operating modes: POWER OFF – IN USE LEVELS 1-2-3. They are indicated with the heating level display on the S-Pack battery. The LED flashing modes corresponds to the selected heat setting.

    S-Pack with bluetooth® Using the phone App: Please refer to the Bluetooth® app or www.therm-ic.com.

    Turning the device on: Press the control button (1.3) for a long period of time (approx. 3 sec) to turn on the S-Pack battery at the lowest heat level. If the control button is pressed for too long (approx. more than 6s), the S-Pack will remain in OFF mode.

  • Therm-ic has a long history, which began with the invention of heating systems for ski boots. Building on the developments and patented technologies of the last 20 years, our range of products now includes a variety of high-quality solutions in the field of portable heating systems, which are proven to provide warmth.

    Our history begins with a declaration of love \x96 to the world's most beautiful sport: skiing.

    Imagine skiing in the mountains on a beautiful blue-sky day. Fresh powder swirls around you as you make turns down an untracked slope with the sun in your face. Everything is perfect, except for one thing: Cold feet and hands that refuse to stay warm, regardless of how much you stretch them or which high-tech materials you are wearing. It is uncomfortable, annoying, painful and it ruins a perfect experience.

    The founders of Therm-ic must have had very cold feet because back in the 70s, they decided to deal with the problem.

    The first steps: To begin with, they developed a heating device that spread warmth via the insole to the ski boot. A great idea, however, when the external batteries became wet, they stopped working. So, the search for a better solution continued. Over time, ideas improved and so did battery technology. The next development was a heated insole that worked as a barrier to the outside environment and wouldn't allow cold air inside of the boot. This clever invention could be used in any ski boot \x96 or everyday shoe.

    The year was 1998 and Therm-ic was born.

    Cold as a catalyst: The idea created the first partnerships with big ski boot brands, and our product and brand became known to more and more customers. The insoles and people's warm feet were often an issue discussed on chairlifts and gondolas \x96 social marketing before Facebook \x96 but we wanted more: more knowledge, more expertise and more warmth.

    In cooperation with universities and research departments, we started to get closer to the issue of cold itself: How does it begin? What effects does it have on performance, safety, coordination and balance? What health problems can occur as a result? And, most importantly, how can warmth be kept inside of the body?

    Therm-ic grows: We became cold experts, and our know-how was requested more and more often. Our team started talking to people around the world, convincing brands, companies and end-consumers that there was a real solution to cold feet. Under the leadership of August Stangl, who has a long history at Therm-ic, the brand grew, export started and soon products could be found in 30 countries worldwide. Furthermore, he formed partnerships with big players in the ski, snowboard and work segment.

    The growth led to many things like permanent warmth for the hands and feet, insulation for the entire body and care products. In addition to products running on batteries or via Bluetooth, we created environmentally friendly, non-electronic solutions as well.

    Our portfolio consists of patented products for sports and leisure as well as working shoes. Today, Therm-ic cooperates with brands such as Rossignol, Tecnica and K2 when it comes to ski boots as well as the work shoe brand Sievi.

    Being cold is now a thing of the past.

    Therm-ic today: Today, we are part of the SIDAS Group, which is a worldwide leader in foot comfort solutions, with specialized products like insoles, socks and foot protection. Our know-how is the perfect addition.

    In 2017, we started a major relaunch, updated our design and logo and presented new products. Now, we are ready for anything that the future brings \x96 like new product developments and partnerships.

    Therm-ic is located in Voiron, in the French Alps, and we still have at least one foot in the snow \x96 as well as our heart and brain \x96 with our great love for skiing.

    Product Reviews

    Review Summary
    1 Reviews
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    100% Recommend this product (1 of 1 responses)
    By Beatriz
    Miami, FL
    Electric Socks work!
    April 12, 2023
    One of my old batteries no longer works so I bought these batteries to replace the dead one and the second old not-dead one. I figure the other battery would die at any time so now I just keep that one as a replacement. I love the electric socks because they keep my feet warm while skiing. I do prefer the design of the old batteries, which showed what setting the socks were on (low, med or high). These new batteries don't do that.