Halcyon teamed up with a leading industrial battery engineering company in the USA to design a safe, simple, and reliable power source, the Halcyon Explorer 9 Lithium Heater Pack with LED Fuel Gauge! 

Key Features:

• Built-in LED "fuel gauge" for monitoring battery level
• Lithium battery for long lasting reliable power
• 2 Hour burn time on a heated undersuit
• 5 Hour burn time on a heated vest
• 20 hour burn time on a focus or flare light
• Made in the USA

Includes:

• Explorer 20 Lithium Battery Pack
• Explorer style canister and Halcyon's exclusive dry lid design
• Charger (1.5Ah)
• 19" E/O cord (48.26 cm)