It depends on what you want from the boat and how realistic the labels are on the packs you want to use.
Personally most of my boats use 25C labeled packs, I have some sprint racing and SAWS boats that I get as high a real C rate as I can afford for, but I want about 6 minutes runtime for most of my boats which is only 10C, and most of the 25C packs I have tried are comfortable operating at 10C.
If you want more power and shorter runtime it pays to do some research to make sure you aren't picking packs labels "True 150C" that are realisticly <20C packs.
You have a 300A ESC how hard are you willing to load it? Are you going to be pulling 300A average with no overhead and spikes way above 300A or are you leaving some overhead for reliability and pulling 150-200A average to keep your current spikes to about 300A?
An average of 300A is 30C on 10,000mAh, and I don't know of any 35C labeled packs that I would trust to actually supply 30C, if you want to keep your peaks under
300A and have averages in the 150-200A range though you should be able to find 35C labeled packs that are capable of putting out the 15-20C that you will be pulling.
Check out the RCGroups battery section where the best in depth testing is done to see what the specific 35C packs you are thing of will actually handle.
Last edited by NativePaul; 03-31-2021 at 04:28 AM.
Paul Upton-Taylor, Greased Weasel Racing.
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