Replacing the original bulb is a simple task, and you can refer to the instructional video for guidance. This process is specifically designed for 3-7 C / D-Cell Maglite flashlights. Using fewer batteries will help offset the cost due to improved energy efficiency.
Replacing it, is as easy as changing the original bulb, please you may also see the Video how to proceed ONLY to be used for for 3-7 C / D-Cell Maglite flashlights The energy efficacy will compensate the cost by using fewer Batteries