AAA to 18650 Charging Sleeve

thingiverse

This simple print is for those who have battery chargers that don't cater well for AAA batteries (such as the XTar VC8 and others). The batteries charge fine but are difficult to balance in the charger. The sleeve on the outside is the same size as an 18650 battery and on the inside a AAA battery. The sleeve is short enough to note obscure each end of the battery so it will charge correctly. Simply insert the battery into the sleeve and it drops into the charger with no fuss. UPDATE: That thing was so slippery I added a V2 version with knurled outer edge and a small handle to make it easier to remove from the charger. UPDATE: Found some batterys which where noticably thinner than some of my others so added a new tighter version (0.2mm smaller radius on the grips)