This impressive LED flashlight is powered by three Lithium-Ion batteries, each producing 3.7 volts (not AAA as reported earlier). These are rechargeable batteries and the light kit includes the charger. The light can be reduced in size and weight by unscrewing one battery in its case and it will work well with the remaining two batteries. We liked the brilliance of the three-battery set-up best. The suggested retail price is just under $200 for the whole kit.
We did a trial with this unit and came away completely impressed with its durable construction and its ultra-bright beam from the three LEDs. It completely lit up an otherwise dark marina.