mamba on 4 cells

hey guys. i have a rustler and im running the sidewinder in it. and i have a 2 cell lipo and 2x7cell nimh. and i have 2 extra nimh cells just sitting around. i was going to put them on one of the 7 cells to make 9 cells for a total of 10.8 volts. but i was thinking since the motor (5700) can handle 12cells nimh and thats a total of 14.4 volts. would it be able to handle a 4 cell lipo. with a bec just in case lol.

just wanted to know. thanks.

if it can i was just going to get one more 2 cell since they are cheap at my job and put them together and make a 4 cell. and see what it can do.