qwerty11 wrote:
BFL13 wrote:
Now it gets sort of ugly. The voltage of the battery keeps changing when it is being used , so the amps change if the watts stay the same.
Does the voltage drop follow any standard curve (i.e. logarithmic, exponential)?
It has to have some type of x/y value relationship. I'm guessing x would be voltage and y would be % discharge perhaps?
I know this is getting very academic here and giving me a level of fidelity not necessary, but I live in an engineering world (obviously not electrical) so I get excited when dealing with calculations.
Yes the curve is determined mostly by the Peukert curve as amps increase. But that constant varies by battery and battery type. At low to medium draws golf cart and true deep cycle batteries rule. At medium draws hybrid and marine batteries do best. At high draws starting and AGMs generally have the advantage. But that is very generalized.
Jim
