3xAAA to 18500 Li Ion battery adapter

cults3d

This spacer lets you convert your flashlight that takes the 3xAAA battery pack into a rechargeable flashlight that uses a single 18500 Li Ion Battery. The normal 3xAAA battery has a voltage of ~4.5 volts with fresh batteries and this battery when fully charged is ~4.2 This adapter is mainly just to take up the extra space to keep the battery from rattling around and/or losing contact with the spring on the negative side part number off of battery pictured is NCR18500A, other batteries may be slightly different dimensions than this one, but I would expect them to work anyway, flat top batteries may not work as sleeve may be too long, but I wouldn't suggest using a flat top battery anyway as they are unprotected and risk overdrawing in a cheap flashlight like the one pictured