18500 to 18650 battery adapter Frsky X-Lite iSDT C4

The Frsky X-Lite uses fairly uncommon 18500 batteries.
I created this adapter to reuse my 18650-charger.

print without raft, use a M4x12 screw with round head and a nut to build the electrical part of the adapter.
put the 18500 battery together with the adapter into your 18650 charger and have fun!