New warning insert in MMM box: "DO THE MATH!"

[Pdelcast]

Originally Posted by pasan

A little confused... I understand most of the intricacies behind brushless technology, but why would bad packs cause higher voltage spikes?

Because during braking the ESC has to dump power back into the battery. Packs with poor C ratings have high internal resistance, so to get the power back into the battery the voltage has to rise. The lower the internal resistance of the battery (higher C rating) the lower the voltage drop during accelleration, and the lower the voltage rise during braking.

[littlegiant]

Originally Posted by Pdelcast

Because during braking the ESC has to dump power back into the battery. Packs with poor C ratings have high internal resistance, so to get the power back into the battery the voltage has to rise. The lower the internal resistance of the battery (higher C rating) the lower the voltage drop during accelleration, and the lower the voltage rise during braking.

Will bigger capacitors help prevent damage then?

[shaunjohnson]

caps are for huge amps for split seconds. acceleration can go on for more than a few seconds.
hence a good battery is needed.