💡 High-Efficiency F4T5 Fluorescent Tube with Low Mercury Content Review

I can't rate this article yet. I installed them easily enough, but they didn't catch fire. I just put new batteries in and checked to make sure they are in the right place. It's a Coleman lantern. The tubes I removed were clearly burned out. I bought a used flashlight so I don't know if it's the tubes not working or something is wrong with the flashlight. I don't know what to do next. ?

These F4T5/D fluorescent tubes were purchased for an old RayOVac Workhorse flashlight. Nowadays, new flashlights usually use LEDs. After replacing the old bulbs and installing new 6V Duracell batteries, the workhorse works great. The fluorescent tubes were very well packed in bubble wrap and arrived in perfect condition. Reviews from buyers who buy from other suppliers state that their orders often arrived damaged.

This brings a happy ending to a long search. Exact Measurements: 5 1/4" end to end and 6" tip to tip (overall). This replaces an old tube from a twin lamp that is probably over 40 years old. old, it has no trademark or other markings. The bad tube was marked "Parly FL-4D". Local shops only had cool white bulbs, which are disappointingly dimmer; I discovered this the hard way and had to return one. My flashlight uses three "C-cells". This package is marked "F4T5/D"; The only clue as to where…