Extended Heat Runtime - High capacity batteries provide up to 17 hours of warmth depending on selected heat level for all day comfort Bluetooth Heat Control - App based control allows fine tuning of heat output with multiple levels motion control and eco mode Ultra Thin Heating Elements - Low profile elements fit under most insoles without affecting boot or shoe fit Manual Heat Adjustment - Built in battery buttons offer simple three level control without needing a phone Multi Footwear Compatibility - Designed to work in ski boots hiking footwear and everyday shoes that allow battery attachment Custom Installation Design - Cut to fit routing system lets the heating cable stay hidden and secure under the insole Reliable Cold Weather Performance - Engineered to deliver consistent warmth in demanding winter conditions Storage - Store in a cool, dry place ideally between 68°F and 77°F (20-25°C) Care - Avoid full discharge or 100% charge aim to keep between 20-80% for long-term storage Care - Recharge every 3 months to avoid deep discharge and battery damage Calibration - If the battery is completely dead, charge and discharge it fully twice to recalibrate

Battery Model: C Pack 1300B Heat Levels Manual: 3 Levels - Level 1 up to 13 hours, Level 2 up to 7.5 hours, Level 3 up to 4.5 hours Heat Levels App Controlled: 10 Levels Control Method: Manual And Bluetooth App Charging Method: USB Charging Cable Recommended Charger Output: 5V 2A Heating Element Type: Ultra Thin Adhesive Elements Compatibility: Therm Ic C Pack Battery Systems Only