Review on Flashlight Replacement Maglite Conversion Flashlights by Ryan Eppinger

I have 4 different D-Cell Maglites, two and four chambers. They don't work in any of them, even after reversing the polarity in one to see if that was the problem. I don't know what the problem is. I was able to get one of those two to work in my Coleman 4D flashlight, so I know one of them should work (and have tested them explicitly, both polarities, in a 4 element Maglite that works with an incandescent bulb - so it's not on power and not in this flashlight. I suspect the connection isn't working). The other one is completely defective and is going back. Find someone to buy from and check compatibility carefully.