hi, i just got my alpha 40 trainer today and have a couple of questions about charging the batteries.
the plane came with a charger that has 2 cables for charging the rx and tx.
Can both be charged at the same time?
and

Does the power on both need to be turnedon or off during the charging process?

Gotta know,tomorrow is my first day flying this plane with my instructor and dont want to have to wait on my batteries to charge while I am there.

thank you in advance for your help.