The new BD 1800 Rechargeable Battery and charger is the next evolution in modular rechargeable battery pack technology. Compatible with the Sprinter 500 and ReVolt 350, the BD 1800 rechargeable battery comes with a USB charger and is a 1800 mAh Lithium Ion rechargeable cell, giving you the freedom of reliable light you can use again and again while running, climbing and trekking in the mountains.
1800 mA-hr Lithium ion of rechargeable power
Dual-Fuel: Maximum flexibility to utilize either the rechargeable lithium ion BD 1800 Battery or Alkaline cells.
Currently compatible with ReVolt 350 and Sprinter 500 headlamps