I have an ECHO 1 P90 and i would like to know if i could use a 10.8v battery with it. im not too familiar with AEG's as this is my first one, but my gun came with a 9.6v and i guess it has a good gear box along with reinforced steel gears. i just want to raise the rof without having to buy a new motor and stuff, so would it be smart for me to buy and use a 10.8v battery in my gun?