Battery: 18650 Battery - 3500mAh 3.7V
We use LG brand 3500mAh capacity 3.7V 18650 batteries. Most other dive lights use generic batteries that have a capacity of 2200 - 2600mAh. That means our batteries have up to 37% more capacity.
Capacity : 3500mAh
Nominal Voltage: 3.6V
Peak Voltage: 4.2V
The batteries come wrapped in an Aqua Lumo shrink wrap, but inside it is an LG battery.