18650 to double D battery adapter for torch

This allows you to replace two D size batteries with one 18650 battery.

You need to add a strip of wire or thin metal in the bottom end to connect the negative terminal of the 18650 to the bottom of the holder.

This is version 2.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/e355Vic9wma