This detachable, rechargeable lithium-ion battery (Cat. No. 29025) powers the Klein Tools Cooling Fan (Cat. No. 60155) which is designed for use with Klein Tools' hard hats and safety helmets. The battery attaches to Klein's patent-pending front/back accessory mounts for easy attachment and removal. It powers the dual-fan which forces outside air into the shell to push out stale hot air, facilitating cooling in 16 different configurations for efficient airflow. This modular battery can also charge other small USB devices like headlamps, phones, jobsite speakers, and more.POWERS KLEIN TOOLS' COOLING FAN and small USB-C devices, headlamps, phones and more EASILY ATTACHES TO KLEIN HARD HATS and safety helmets with accessory mounts BATTERY CAPACITY is 3200 mAh; up to 10W of total power 2 USB-C INPUT/OUTPUT PORTS simultaneously power or charge 2 USB devices RUGGED DESIGN with 6.6-Foot drop protection and IP54 rating LED INDICATORS display 4-segment battery status INCLUDES CHARGING CABLE USB-C to USB-A

• POWERS KLEIN TOOLS' COOLING FAN and small USB-C devices, headlamps, phones and more
• EASILY ATTACHES TO KLEIN HARD HATS and safety helmets with accessory mounts
• BATTERY CAPACITY is 3200 mAh; up to 10W of total power
• 2 USB-C INPUT/OUTPUT PORTS simultaneously power or charge 2 USB devices
• RUGGED DESIGN with 6.6-Foot drop protection and IP54 rating