Some interesting observations

[Gary]

I have been doing some testing with my Phil Thomas SS 45 and this is what I have concluded. I have used Thunder Power batteries for a long time and have 45-90c, 65-130c and 70-140c. The boat runs a 5,000 and a 4,400 together in parallel, a Castle ESC that shows a pull of 370-380amps at 46,000rpm. Speed is a best of 107mph with an average of 104-106mph. The 70c batteries show no change in speed over the 45 or 65c.I even expected the 70c to offer much better speeds but they did not. Voltage drop is about the same for all and batteries are pre heated to 85*F before each run. Thunder Power made some great claims about much less voltage drop but this was not the case.....still great lipos but not the case. Don't know if this will help anyone but who knows.

[Fluid]

Frankly I don't believe pack makers claims of 65C or 70C. My 65C TPs and 65C Dinogys perform almost identically to my 45C Hyperions - equal setups, equal cell cycles. That doesn't mean they are bad, just that they seem to be no better in my datalogging.



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[Joern Markset]

From my experience a lot of the cheaper packs seems to be overrated compared to the more expensive packs.
I`m normally running pretty low C rating in all my applications, and it does not seem to be a problem at all.
Every now and then people claims that they need higher C rating on a setup that should not be able to pull that much amp at all, I believe that they are way out of settings on their esc or the packs they are using are actually very overrated.

[kevinpratt823]

Gary which castle esc is it? That's some serious amperage!

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[Gary]

Ice 240 believe it or not. They hold up great as long as they stay fairly cool. Also my ESC is mounted directly to the motor. The wires to the motor are 1 inch long, they are cut so short I have a hard time soldering the 8mm bullets to the end. Total motor/ESC are 3 inches which helps alot.

[Cooper]

I'm assuming that is the spike in amps you are reading. What are your amps sustaining at? You could run 500amps through that esc but for a short amount of time. The sustained amperage draw is what is critical to the life of an esc and cooling.

[Cooper]

Oh and I too believe all battery "c" ratings are not accurate. There is no definitive way to manufacture a battery to be exactly repeated. I believe the better battery's are manufactured in a more controlled environment with better materials. And realistically 10guage wire will not carry 400 amps for any length of time. Think about it a 130c 5000mah battery to discharge 600+amps! With 10guage wire.