my new e-revo is on the way and wondering if i have to charge to battery first or if it's already charged?
You should charge it, while charging read the manual and get familiar with it
Whatever it is I just typed... could be wrong.
while your waiting you can download the manual online here: http://traxxas.com/sites/default/fil...l_100205_0.pdf
parts list for your parts on it:http://traxxas.com/sites/default/files/7108_parts.pdf
DEU 8:18 ESV
also i would try some gens ace 2s lipo