I apologized I understood this wasn't a boating question but I was under the impression that it would be ok to ask the question. Again I apologize, I don't go through life pretending to know everything and I certainly don't make the highlight of my day trying to insult people because they ask questions. But what if the "bigger gas tank" had less gas therefore less weight then the original "gas tank" there would be an increase in speed wouldn't there?
Sorry I wasn't trying to insult you. I was trying to just use an example to easily explain what
@dingbat did above in a much better manner. Sorry again!
I'd like to add to dingbats explanation if no one minds?
An electric motor needs the proper voltage to operate, in your case 24v. Raising the the voltage from a battery supply will only cook the motor.
Quick read explaining hooking batteries in series vs parallel.
But I stand by what dingbat and I mentioned. You'll either need a higher horsepower motor and/or change gear ratios.
Just as an example:
Take a plain Jane automobile and you want more power. (Let's forget about computer reprogramming and NOS). Change the fuel system (as in changing your battery system) won't increase power or speed. Changing parts in and on the motor will, but that would equate to changing the motor to a higher HP motor. Changing the gear ratio won't increase motor HP but it can effect using the power to peak performance. Hope I made a little sense.