The S-Pack 700B battery gives your Therm-ic or SIDAS heated socks up to 7 hours of warmth—plus Bluetooth app control on your phone. Sold individually.

Use as a replacement or backup. USB charging cable and 5V/2A charging cube not included.

Heating Duration

• Level 1: up to 7 hours
• Level 2: up to 4 hours
• Level 3: up to 1.5 hours

Key Features

• Bluetooth control via smartphone app
• Three manual and ten Bluetooth-adjustable heat settings
• Compact and lightweight

Compatible Heated Socks

• Therm-ic Powersocks Heat Men
• Therm-ic Powersocks Heat Ladies
• Therm-ic Powersocks Heat Fusion
• Ultra Warm Comfort S.E.T®
• Ultra Warm Performance S.E.T®
• SIDAS Ski Race S.E.T®
• SIDAS Ski Heat LV
• SIDAS Ski Heat MV

If you want longer battery life, check out the S-Pack 1400B.