Ultraspire 21700 Battery

Specifically for the Lumen 800 Solstice. This 21700 battery is intended as a replacement or extra battery for runners who train or race with this waist light.

Especially handy during long nights. You notice the advantage when a single battery charge is not enough for an ultra, a long trail run, or training in the dark.

Take it along as a spare for long distances. This way, you can swap batteries on the go and keep using your lights when fatigue and darkness combine.

Select this only for the Lumen 800 Solstice. For other 3D Waist Lights, you need the 18650 battery.