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Originally Posted by wallot
If adding CAP bank to ESC isnt bettter to add just one cap with higher capacity? like 2200uF? they even have lower ESR than thesmall ones.
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One large capacitor has less surface area than several smaller caps of the same total value. This helps the caps shed the heat better. Also, don't forget that you combine the ESR values of several small caps just like resistors in parallel so the effective ESR will be about the same, if not lower, than one larger capacity cap.
So, to get 2200uF, you would need ten 220uF caps in parallel. Then, if each of those 220uF caps have 0.01 ohms of ESR, that would equate to 0.001 ohms total.
Smaller caps may be easier to physically install as they can be arranged in any formation to make it fit. The only downside to use multiple caps is the wiring hassle.