This Design Idea describes a high-intensity, rechargeable flashlight system that you can build from a 6V lantern-type flashlight. The rechargeable battery comprises four 2V, 2.5-Ahr (ampere-hour) SLA ...

In the great outdoors, getting more out of a single tool means a better time at camp and less gear and weight in your pack. That's a big reason why the category of multifunctional lighting has been ...