{"product_id":"20000mah-fan-vest-power-bank-5v-3a-usb-c","title":"20000mAh Fan Vest Power Bank 5V 3A USB-C Portable Battery Pack for Cooling Fan Jacket Vest – Dual-Use External Charger for Outdoor Work, Construction, Summer Heat Relief, Hiking \u0026 Warehouse","description":"\u003ch2\u003e20000mAh Fan Vest Power Bank – 5V 3A USB-C Battery for Cooling Fan Jacket \u0026amp; Phone Charging\u003c\/h2\u003e\u003cp\u003eStay cool and connected all day with this purpose-built 20000mAh power bank for fan vests and cooling jackets. Delivering a stable \u003cstrong\u003e5V 3A output via USB-C\u003c\/strong\u003e, it's engineered to meet the exact power requirements of most fan-powered cooling clothing — while doubling as a high-capacity portable phone charger. Whether you're on a construction site, hiking trail, warehouse floor, or outdoor event, this battery pack keeps your cooling gear running and your devices charged from morning to quitting time.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e🌀 \u003cstrong\u003e5V 3A USB-C Output\u003c\/strong\u003e – Matches the exact voltage and amperage required by most fan vests and cooling jackets for stable, uninterrupted cooling performance\u003c\/li\u003e\n\u003cli\u003e🔋 \u003cstrong\u003e20000mAh High Capacity\u003c\/strong\u003e – Powers your fan vest for extended hours and charges your smartphone multiple times on a single charge\u003c\/li\u003e\n\u003cli\u003e📱 \u003cstrong\u003eDual-Use Design\u003c\/strong\u003e – Works as a dedicated fan vest battery AND a standard portable phone\/tablet charger — one device, two essential functions\u003c\/li\u003e\n\u003cli\u003e🔌 \u003cstrong\u003eUSB-C Connector\u003c\/strong\u003e – Compatible with modern fan vests, cooling jackets, smartphones, tablets, and other USB-C devices\u003c\/li\u003e\n\u003cli\u003e🌞 \u003cstrong\u003eBuilt for Outdoor Work\u003c\/strong\u003e – Compact, lightweight, and rugged enough for construction sites, warehouses, hiking, and summer outdoor labor\u003c\/li\u003e\n\u003cli\u003e🎁 \u003cstrong\u003eGreat Gift Idea\u003c\/strong\u003e – Perfect gift for outdoor workers, athletes, hikers, and anyone who battles summer heat on the job\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e20000mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eUSB Type-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Devices\u003c\/td\u003e\n\u003ctd\u003eFan vests, cooling jackets, smartphones, tablets, USB-C devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use Case\u003c\/td\u003e\n\u003ctd\u003eFan vest \/ cooling jacket power supply + portable phone charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: Who is this power bank designed for?\u003c\/strong\u003e\u003cbr\u003eA: It's ideal for construction workers, warehouse staff, outdoor laborers, hikers, athletes, and anyone who wears a fan vest or cooling jacket in hot summer conditions and needs reliable, all-day power.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will this power bank work with my fan vest or cooling jacket?\u003c\/strong\u003e\u003cbr\u003eA: Yes — most fan vests and cooling jackets require a 5V 3A power supply. This bank outputs exactly 5V 3A via USB-C, making it compatible with the vast majority of fan-powered cooling clothing on the market.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a good gift for someone who works outdoors?\u003c\/strong\u003e\u003cbr\u003eA: Absolutely. It's a practical, thoughtful gift for Father's Day, birthdays, or holidays for construction workers, landscapers, delivery drivers, or anyone who spends long hours in summer heat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I use this power bank with my fan vest?\u003c\/strong\u003e\u003cbr\u003eA: Simply connect the USB-C cable from your fan vest or cooling jacket to the USB-C output port on the power bank, then power on the bank. Your fan vest will begin operating immediately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use this to charge my phone or tablet at the same time?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the 20000mAh capacity is large enough to power your fan vest and still have plenty of charge left to top up your smartphone or tablet throughout the day.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this power bank have STEM or educational value?\u003c\/strong\u003e\u003cbr\u003eA: Yes — it's a great hands-on tool for learning about electrical output specifications (voltage\/amperage), battery capacity, and how wearable technology interacts with portable power systems. Suitable for STEM projects and demonstrations.\u003c\/p\u003e\u003ch2\u003eFast US Shipping\u003c\/h2\u003e\u003cp\u003eShips from US warehouse, free delivery 2-7 business days.\u003c\/p\u003e","brand":"Smart Tech Nest","offers":[{"title":"1pc","offer_id":44469173092403,"sku":null,"price":47.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/0937\/8355\/files\/b2dcd74b1146deec0bad1b7ac318bd37.jpg?v=1783097855","url":"https:\/\/smarttechnest.com\/products\/20000mah-fan-vest-power-bank-5v-3a-usb-c","provider":"Smart Tech Nest","version":"1.0","type":"link"}