TX Battery Polarity

Diode Protection

The Spektrum polarity is identical to JR.  It is not like the others.  Get a JR transmitter adapter if using an after-market charger.

A charger / cycler will work fine with this TX.  There is NO "blocking diode".

This also means you will pop the fuse in the TX if you even come CLOSE to attempting a reverse-polarity connection.  Fuse is a 3A, mini glass body fuse.