30V Battery-Powered Fan-Cooled Vest Complete Cooling System Kit

Stay Cool. Stay Moving.

Engineered for hot days and active lifestyles, the Tern Fan Vest delivers powerful airflow and lightweight protection wherever the day takes you. Whether you're working outdoors, exploring the city, hiking in the heat, or enjoying weekend adventures, this innovative cooling vest helps you stay comfortable, focused, and on the move.

Designed with integrated fan-powered ventilation and a lightweight technical shell, the Tern Fan Vest circulates air throughout your core to reduce heat buildup while maintaining a clean, versatile look that pairs effortlessly with your everyday wardrobe.

Features

Complete Cooling System – Includes rechargeable battery, charger, dual cooling fans, wiring system, and detachable hood

Advanced Airflow Technology – Dual fan system circulates air throughout the vest, helping cool the torso, back, and neck for lasting comfort in warm conditions

Dual-Zipper Access Design – Convenient dual-zipper construction allows quick access to the battery pack without disrupting airflow or removing the vest

Detachable Hood – Easily attach or remove the hood to adapt to changing weather conditions, activities, or personal style preferences

Internal Cord Management System – Built-in interior loops securely route and organize fan wiring, keeping cords neatly in place and out of the way during movement

Lightweight Technical Fabric – Durable, water-resistant shell helps protect against light rain and wind while remaining breathable and comfortable

Adjustable Comfort Fit – Elasticized hem and ergonomic design provide a secure fit while allowing unrestricted mobility

All-Day Cooling Performance – Multiple fan speed settings deliver hours of cooling airflow to help keep you comfortable throughout the day

Versatile Everyday Wear – Ideal for outdoor work, hiking, camping, travel, gardening, commuting, and warm-weather recreation

Functional Utility Features – Reflective accents and performance-focused details provide added visibility and practicality for everyday use

What's Inside the Kit

• 30V Rechargeable Li‑Ion Battery

• Charging Chord

• Dual High‑Output Fans & Wiring Harness

• Vest

Specifications 

Material: 100% Nylon 

Interior Mesh: 100% Polyester

Battery Type: Lithium Ion 

Voltage: Variable 17V - 30V

Run Time: 6-30 Hours (approx)

Charge Time: 4 Hours (approx)

DC Output: 17V - 20V - 23V - 26V - 30V

DC Input: 12V-2A

USB Output: 5V-2.4A / 9V-2A / 12V-1.5A

Operating Temperature: 0°F ~ 104°F / 0°C ~ 40°C

Charging Temperature: 0°F ~ 104°F / 0°C ~ 40°C

Storage Temperature: 14°F ~ 113°F / 0° ~ 40°C

Water Resistance (Battery): Simple Waterproof Structure Not Guaranteed To Protect Against Submersions 

Battery Weight: 342g

Fan Power Consumption @ DC24V - 8V: 27.5W - 1.8W

Splash Proof, Water Resistant, and Dust Proof Performance: IP55 Rating

Run Time Modes

Fit & Size Guide

• Sizes M–2XL, with dimensions (in):

  •  M: 46×19×27

  • L: 49×19×28,

  • XL: 51×20×28,

  • 2XL: 54×21×29 

Pro Tip: Size up for layering or freedom in motion.

Guides

User Manual 

Quick Start Guide