wat is a UBEC/BEC?

i'm putting a 9xl with a MM esc, and goin to be running 14-16 cells, i was on here before and they said i should use a ubec. I dont know wat this is. O and when wiring up my batteries should i put them in a series or a parallel curcuit?

[BrianG]

Welcome to the forums!

This page should help you out.

so if im runnin 14-16 cells with my 9xl do i run a series or parallel for my batteries?

[Sean]

series increases the volts (speed) and parallel increases the battery capacity (run time) im guessiing you will want them in series for the extra volts

ok so if i run my 16 cells in a series wat do u think ill get for top speed? and my motor can handle this?

[Sean]

probably about 45 mph at a guess and yes your motor can handle it but the controller is only rated up to 12 cells all tohug i have heard of people runing them on more.

i am runnin it with a ubec.

[bdebde]

4s (16.8v full charge) with the UBEC is no problem for the MM, I have one set up that way. 16 cells would be a bit more initial voltage, but some have had good luck up to 5s (21v full charge) with the MM.