Originally Posted by
6376vette
The original discussion did not account for internal resistance. Just because a pack has a higher c rating does not mean it has a lower internal resistance. I was making the point about the c ratings (being the maximum that can be put out) if your system is not capable of pulling 40c then a 65c is going to give you the same run time. Now if you want to throw IR into the mix then sure. The same c rating packs with differing IR will produce different run times and power output. My only point was that c rating, by itself, has little to no impact on run time.
I wish more guys talked like you guys do. In my opinion the internal resistance is something that is more important than c rating. Thanks for the good discussion.
There is no industry standard for C rating on batteries.
You can use the C rating as a guide with the same manufacture brand name.
This is the most important thing to look at voltage drops on the battery under a load.
Dynamic timing (boost)on your ESC uses more and more amps (load on battery) to increase motor timing by blasting the coils with voltage.
Voltage is speed.
Power (Watts) = voltage X Amps
As above formula - the higher the Amp draw the lower the votage may drop.
Test your batteries under a load and you will be surpised at the real C rating or internal resistance.
