11.1v Battery Upgrade?

Hey, noob question sorry.
Will an 11.1v lipo or li-ion battery improve anything other than the fire rate?
Hearing everyone say they are necessary but not sure exactly what they do.

Battery can only affect rate of fire… main spring can only affect FPS… neither can affect the other… unless you put in such a heavy spring the battery/motor can’t turn the gearbox…:+1:

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Ok thanks i wasn’t sure.