How long does the Down Low Glow battery last?

The Down Low Glow battery will last about 3 hours, 40 minutes on a dual tube system, and 7+ hours on a single tube system.

The rechargeable NiMh battery is 1 pound light and can be recharged approximately 500-1000 times. That's up to 20000 hours of glow-time with a single tube system!