18650 small block extra connector clip-on

This is an add-on to the 18650 small blocks (http://www.thingiverse.com/thing:1729730). It allows you to add "extension" connectors at the bottom end of the pack so you can parallel the packs, thus doubling the capacity.

The flat "T" section is a custom raft to help it print nicely in PLA on a non-heated printer bed.