https://www.amazon.com/Multi-functional-Travel%EF%BC%8C4000mAh-Rechargable-Brushless-Inflating/dp/B0D4BZL2WT
The fan and battery are designed to be separated and can be disassembled and used as a mobile power supply when the fan is not used.
• Supports charging with 5V-20V charger, supports fast charging, maximum output power 20W (with Apple interface)
• Usage time: 1-8 hours Type-C interface. Uses two 3000 mAh 21700 batteries. The large battery and large capacity provide guarantee for battery life.
• The fan is made of aluminum, which has stronger wind power and longer service life than ordinary plastic fans.
• Applicable scenarios:
summer cooling, outdoor sports, photography, outdoor hair blowing, air mattress inflating, barbecue smoke, bonfire combustion, car cleaning, debris removal, outdoor emergency power supply