Battery life depends on your temperature setting: 12 hours on low (40℃), 10 hours on medium (50℃), or 8 hours on high (60℃). This ensures all-night warmth for most camping situations.

Remove the heating elements before washing. Hand wash or use gentle machine cycle with cold water. Air dry completely before reassembling to maintain the HeatNapi Heated Sleeping Bag's quality and performance.

Use any standard power bank with 10,000mAh or higher capacity. Both USB and Type-C connections work seamlessly, making it compatible with most portable charging devices you already own.

Absolutely! The 60℃ high-temperature setting combined with hollow cotton insulation provides exceptional warmth in freezing conditions. Many users successfully use it in sub-zero temperatures with proper layering underneath.

The two-way zipper system allows complete separation into two independent sleeping bags. The top layer includes heating elements while the bottom serves as additional insulation or a standalone non-heated bag.

Choose from three precise temperatures: 40℃ (104℉) for mild conditions, 50℃ (122℉) for moderate cold, or 60℃ (140℉) for extreme cold. Adjust instantly based on weather changes throughout the night.

The 190T polyester fabric offers water-resistant properties that protect against light moisture and condensation. For heavy rain, use additional waterproof covering to maintain optimal insulation and heating performance.

The HeatNapi Heated Sleeping Bag reaches your selected temperature within 3-5 minutes of activation. Pre-heat before getting in for immediate comfort, or turn on while inside for gradual warming.