Spektrum DX6 protected 18650 holder

thingiverse

This is a substitute battery holder for the DX6 transmitter. It replaces four AA batteries with two longer, protected 18650 cells. To build this design, you will also need the following parts: Battery Springs made from wire, preferably salvaged from an old TV remote control. A JST-EHR 2-pin connector and cable are also required. Additionally, you will need two 18650 lithium-ion batteries with protection circuitry built-in. It's worth noting that using shorter batteries without a protection circuit may not be advisable, based on the creator's experience.