Bill
I understand that you're looking for the 'real deal' Glow Bee charger, but I've kept my GB Fire Plug alive since the '70s by raiding the town recycle center. There are bins for discarded batteries and electronics where there are piles of wall chargers. The original Glow Bee charger output was 4.5 volts. I've found that the chargers that put a little more or less voltage work as well as the original and and are likely better quality. Just cut the jack off, determine which wire is positive, and screw them to the respective terminal.
Even more important, is battery replacement. The 2 volt battery is still being made by EnerSys and is called a Cyclon 2 volt X Cell.
www.enersys.com. I always have a spare one for when the ability of the battery to accept a charge begins to decline after,roughly, a year and a half.
Ara