Fluorescent Closet Light: Old Style and Old Technology

These ten plus year old closet lights still work and need only 2 AA cells each.  They also have an input plug for a power supply.  These serve as a light that can be velcro attached to a ceiling in a truck camper or van, a shed, or a closet.  It was a great solution to avoid wiring.

These are still functional but better and more efficient types now use LED lights.