Argument thread: Low specc batteries don't kill ESC's. Or do they? - RC-Monster Forums

T-birdJunkie · 09.25.2010, 05:21 AM

Then the ESC does not see the current.

If the battery can't supply it, etc etc.

If you open a fire hydrant, and there's only 15 psi at the hydrant, does the hydrant explode?

pinkpanda3310 · 09.25.2010, 06:31 AM

So the only way sub-par batteries can break the esc is through ripple and over voltage?

slimthelineman · 09.25.2010, 10:42 AM

Quote:

Originally Posted by T-birdJunkie

Then the ESC does not see the current.

If the battery can't supply it, etc etc.

If you open a fire hydrant, and there's only 15 psi at the hydrant, does the hydrant explode?

water is not electricity and is bound by completely different laws, that said using your analagy you forgot load. What if there was something on the other end that wanted 115 psi. Something will give. Again speedos don't push power that is why the are not rated as maxiumum output only max current it can pass on.

T-birdJunkie · 09.25.2010, 03:51 PM

Quote:

Originally Posted by slimthelineman

water is not electricity and is bound by completely different laws, that said using your analagy you forgot load. What if there was something on the other end that wanted 115 psi. Something will give. Again speedos don't push power that is why the are not rated as maxiumum output only max current it can pass on.

OK...

so let's say we have a pumper truck hooked up to the fire hydrant.

What happens then?

suicideneil · 09.25.2010, 04:16 PM

Quote:

OK...

so let's say we have a pumper truck hooked up to the fire hydrant.

We arent talking about water, the analogy simply doesnt work when you start getting into specifics or trying to blur the two subjects.

Voltage will drop when when current rises, that is the key thing to remember about batteries, so buy batts that can supply sufficient current before they become over-worked. The MMM system has been observed to pull peaks in excess of 120 amps, so lipos that can provide a maximum continous current of 120amps are recommended; they will however only be supplying about 20-40amps continously in reality, with 120-130amp peaks lasting mere milli seconds..