Therm-ic Outdoor Ultra Warm C-Pack Batteries – 3 Heat Settings, USB Charge, Bluetooth Control (1300B / 1700B)

Warmth on demand for cold-weather adventures

Meet Therm-ic Outdoor Ultra Warm C-Pack batteries, designed to fit inside compatible insoles for feet-first comfort during winter pursuits like skiing, snowshoeing, hiking, and camping. They’re rechargeable, compact, and built to deliver steady heat when you need it most, helping you stay out longer without compromising warmth.

Available models include 1300B and 1700B variants, with runtimes that suit different activity levels. Some units feature Bluetooth for convenient heat management from your smartphone, so you can fine‑tune warmth while you’re on the move. A USB charger is included for easy recharging, while wall chargers aren’t supplied, keeping the setup lightweight for travel.

Three heat settings for flexible comfort

The C-Pack batteries offer three heat levels to match changing conditions or personal preference. Low, medium, and high heat let you dial in warmth, from extended comfort on gentle days to stronger heat when the wind picks up or you’re resting after a climb.

• longer runtimes (up to 21–29 hours) at milder warmth for all-day wear.
• Medium: balanced heat for typical stretches of activity (roughly 9–13 hours).
• High: higher heat for quick warmth when you need it (about 4–6 hours).

Smart control, simple charging

For models with Bluetooth, heat can be adjusted via a companion app on iOS and Android, making it easy to respond to changing conditions without removing boots. The USB charger is included, delivering a full recharge in about four to five hours, so you’re ready for the next outing.

Compatibility and practical use

These batteries are designed to work with Therm-ic Insoles Heat Flat, Heat 3D, and Heat Kit ranges, helping you bring warmth directly to the feet where it can matter most. The compact design and reliable performance are suited for long days on the snow, twilight hikes, or cozy camp evenings.

About Therm-ic

Therm-ic has a long history in portable heating, starting with ski-boot warmth and expanding to a range of heated accessories. The technology aims to provide dependable warmth that supports outdoor activities and everyday comfort, built on decades of innovation.