The website lists the 2142 as having a brushless motor. Is the same true for the 2102? I tried looking in the manual and specs for info, but found none. Second question is: the 2102 shows dual battery capacity like the 2142 in the pictures for its description, yet only comes with one battery. Does it actually have the capability to add another battery or is the 2142 the only model with dual battery capacity? Thanks Ego community!