Spring bypass question

[MRsDNF]

There is some interesting reading and testing here from djozz which may help to answer your question.

Springs!!

The usual steel springs that are found at the tail and on the driver of our beloved budget flashlights are real voltage eaters, for single li-ion lights that is something you do not want, it means a lower current or shorter regulation periods, depending on battery, current and driver type. If you want to improve your flashlight, one of the most effective ways is to improve the springs. A common and very good way to improve them is soldering a piece of 'copper braid' through the middle of the spr…