OEM replacement\spare battery that will fit both the Hydra 4000, and Hydra 6000 lights. Includes caps.

This is a spare\replacement battery for all of our small dive torches (NR650\700\900\1200) and our smaller photo lights. Hydra 1000, and Hydra 1200. Built in micro USB charging port. Use any standard micro USB cable for charging. Indicator that goes from red to green when fully charged built in on the top of the battery. 3400mAh

Replacement, or spare battery for Hydra 2500\3500. This battery will also work with any of our older models that used 3×18650 batteries wrapped to a single cell.