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just for the record, battery capacity (usually referred to in milliamp-hours or mah) DOES NOT INCREASE RATE OF FIRE. there are guys out there who think so but unfortunately don't understand how a battery works. they voltage of a battery is what determines the speed of the motor = r.o.f. when you add load to a motor its speed will decrease unless voltage is maintained. if you add even more load to that motor (like putting in a heavier spring) it's speed will decerease even further unless you can maintain the same voltage. when guys upgrade their guns with bigger springs, they will add more load to their motor and the current battery that they use may not deliver enough current to keep the battery voltage stable. as the voltage drops, the r.o.f. decreases as well. these guys will then buy a battery wiht "higher mah" to deliver more current while keeping voltage stable. this gives the impression that it's the mah rating that increases r.o.f., but that's an incorrect assumption. batteries will trade voltage for current. if you ask too much current from a battery, it's voltage will drop. we've used this premise in cars for decades. automotive starters run on 6 volts (not the 12 volts that the battery is) because the current required to turn the starter (sometimes 300 amps) far exceeds the batteries capacity to deliver it and the voltage drops when that amount of current is produced by the battery. as a battery delivers voltage and current, a better unit to measure actual performance would be watts (volts x amps) as amps increase,volts will decrease, but certain variables are non-linear depending on battery type and this is just a generalization.
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