A finned extension tube allows an additional 123 cell to be added to the E series
of SureFire flashlights as well as others, such as the McLux1:
In the case of adding the cell extender to the E2, 3 ea. 123 cells or 2 ea. A or AA cells can
be accomodated. With the addition of the E2C adapter, the 9P bezel and lamp assemblies
could also be hosted on the E2.
Above, a McLux1 prototype with the cell extender. The additional fins and surface area will
be useful in a 5 Watt Luxeon application where additional thermal relief is required.
Coupled with E2C adapter and C bezel, the combo can host the P91 LA.
Added to an E1e with 5W SE luxeon on front end (additional thermal relief)
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