Originally Posted by
javacrazy
Based on your comment, can we make the assumption that 40C (40A) batteries delivers well above average 22A. That's all you need? Anything above would be a waste since Motor + ESC can not draw that much power?!
Is my assumption flawed? Just trying to understand the physics behind this.
In general, most LiPo packs are rated at their continuous current capability (like 40c), and their peak current is generally 2x their continuous current rating. So, a 40c 5000mAh is usually capable of 200A continuous, 400A peak.
The discussion of LiPo ratings, internal resistance, etc. is outside the scope of this thread, but suffice it to say that no RC motor is going to draw 200A continuous. It would melt in short order. Peak current for various motors I'm not sure about, other than the general statement that all motors are going to draw their peak current from a dead start. What has been discussed in various LiPo threads is that in general, the total capacity is more important than some arbitrary current rating, since the less of the capacity you use, the higher the average voltage is.