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.

• Rechargeable battery designed to power Klein Tools' cooling fan, small USB-C devices, headlamps, phones and more
• Easily attach to Klein Tools hard hats/safety helmets accessory mounts; no straps needed
• 3200 mAh capacity battery; up to 10W of total power
• 2 USB-C input and output ports to simultaneously power or charge 2 USB devices
• Built-in smart protection
• Rugged housing; IP 54 rating and 6.6-Foot (2 m) drop protection
• 4-segment battery status LED indicators
• USB-C to USB-A cable included