It never fails. There's always a working flashlight when you don't need one. But when the lights go out, or you're stuck on the side of the road at night, that's when you discover the batteries in that flashlight don't work. When Murphy wrote his law, he must have been thinking about a flashlight. That's why the makers of the Forever Flashlight came up with their product. And this week, we put it to the "Does It Work?" test.
The claims on the package are big. "Never needs batteries or bulbs." "Shake for 20-30 seconds, get 10 minutes of light."
Here's the setup for our test. We hid 4 pictures inside a dark, cluttered room. We figured it would take about 10 minutes to find them. So, we shook the Forever Flashlight for 30 seconds and went on the hunt.
First, let's go back to Faraday's Law of Induction. Inside the see through plastic body of the flashlight is a round silver magnet with a hole in the middle. The magnet rides along a shaft that has a copper coil on it. Back in 1831, Michael Faraday figured out, moving a magnet past a copper coil could create a current. That's the concept being used today with the Forever Flashlight.
When you shake it, the magnet moves over the coil and creates electricity. The flashlight gives off a bluish LED light.
We were surprised at how bright it was. In fact, we were able to find all 4 pictures in 8 minutes using the Forever Flashlight.
"Does It Work?" We give it a "yes."
The Forever Flashlight is $19.99 at Bed, Bath and Beyond. It's also available online.
It's also watertight and floats.