Quote:
Originally posted by Jshwaa
Voltage isn't the most important component in making a more powerful xmod, mAh is. The truth is 9V batteries have 6 tiny cells in series inside them. Each of these cells have a relatively small mAh rating. Getting 9V out of such a small and light package might seem ideal, but you are starving your motor of the key component it needs to produce its electromechanical force.....CURRENT. 9V batteries are good for small electronics which need audio amplification, but for driving motors they are the worst choice.
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What do you mean by this ? mAh has nothing to do with increasing power. Higer mAh = longer runtime, higher voltage and discharge rating = speed/torque/power. A 3000mAh cell will NOT give more power than a 500mAh cell unless the former has a higher discharge rating. You will allmost allways sacrifice mAh for discharge rating.
You are correct about 9v batteries having poor perfromance, but for the wrong reason. 9v batteries have a relatively low discharge rating (c rating). They are intended for low-draw devices, they last a long time, but that is because they do not discharge current as rapidly as the batteries we use in RC.
J.