Never run out of battery power during extended field assignments. Increases runtime of the Stella 1000/2500UW by 214 minutes and the Stella 2000 by 115 minutes (on high). Can be utilized to power the light as well as recharge Stella's internal battery. Includes 56 WHr Li-Ion battery pack, battery connector cable, and wall charger. Also compatible with Sola Fast Charge dive lights.