MM esc ?external BEC necessary w/ a 2s config?

[magman]

Is the Hyper STe the same size as the crt.5? If it is, you don't need a bec on 2s
In my daughter's crt.5 and a 3300kv 50 series Medusa w/a mm esc on 2s there is no bec

On my crt.5 w/3s and a 3300kv motor mm esc, I do run a cc bec