I use AAA nimh 720's for my glow .40 & 1/2A stuff.
I also have the AA rx pack that came with the radioset.... no, I dont put that anchor in my DNU

The AAA last for a few flights on the .40 or lots of 1/2A flights.
But I dont do extreme or speed .40 flying with high torque pulls on the $9 std servos (3 + a lil 5g on Throt).