superlight 21700 Li-Ion 4s1p / 4s2p spacer for FPV long-range

by eyefly

I do enjoy solderiong my long-range batteries myself. These spacer are very helpful when putting them together and provide protection against shortages in case of a crash. All version that i found on here were too heavy for my taste - as in long-range every gram counts (also the battery gets beefier). So i designed a version that is very slim (walls are only 1mm thick), but still provides some basic protection. There is also a 18650 version. Print in TPU.