MegaTester
The Megatester End-Cap is what makes the Megatester work. Normal AA flashlight end-caps are simply there to hold the batteries in place and to complete the circuit. The Megatester End-Cap allows you to use your flashlight as a continuity tester. It safely diverts the 3 volts from the batteries to a test lead. When in its stowed position, clipped to the end-cap, the flashlight operates normally.
