Hello,
I have a question about the Spectrum BLX 100A ESC/all esc’s. With the 100A ESC what is the highest C battery you can use or does the C of the battery not matter. Like with the 100A esc can I use a 150c battery or is 100c the limit? If anyone knows please let me know. Thanks

Even if you have a one trilion C you can use it

Current is not what is given but taken what is needed by the load.

Ok, that is what I thought but I didn’t want to buy a new battery and blow the esc lol. I was thinking about taking my Arma Senton 3s and running a 150c battery to increase speed. I have a 50c 11.1 battery and that thing can only get me to 50mph which I’m hoping running 150c can get me to 60mph.
Thanks

I think you might be up for a disappointment there. C-rating does not directly correlate to top speed. So you may (and probably will) end up not going any faster at all - though acceleration may improve.

150C... yeah... right.....

Everything beyond 50C is more rated as a peak current and not as a continuous current and even then beyond 100C I believe those numbers are fictional....
Say you have 8000mAh 150C, the solder tabs of the cells will solder themself lose or burn through at a peak of 1200 amps.....

Oh ok. Interesting…I would have thought increasing from 50c to 100 or 150c would have increased speed but, makes sense that it only will increase acceleration. Also interesting you say anything past 100c is fictional, why would you say it’s only peak current? Ik some cheap batteries companies lie about the Cell rating etc.
Appreciate the info.

It's not only the cheap companies. The problem is, most people don't seem to realize just how how much electrical current these numbers actually mean. Several hundred (or even over a thousand) amps is no joke. Whatever theory (besides pure marketing) is behind these absurd C-ratings, I would not trust any of our hobby's batteries (including ports, connectors, cables, etc.) to survive that for anything but the shortest of peaks. Whatever part of the battery might survive continuous currents like these, something else is likely to melt or even vaporize under such high currents over a longer time.

A little example of what high currents can do to smaller metal objects:
https://www.youtube.com/watch?v=xESCXFz8ZQE

The C-factor does not change the voltage nor the given current because as explained before the current is not what the battery can give but only does give what is asked by the load. If the load only asks 20A then even a trilion C battery will give that 20A

Make an 100A or even better, a 200A continuous discharger and put some batteries on it. After a few discharges the battery has lost some life already not to mention they can become very hot. I can tell because I made a discharger that goes up to 60A and tested it with some shorty batteries I have.

So yes, up to 50C I can believe they are true continuous currents unless otherwise mentioned but higher C ratings are for sure peak currents. Sometimes those C-ratings are based on the internal resistance. 3 milli ohm for a cell is pretty normal, on a 4.2v cell a shortcut would be 1400A (ohms law) but no way a cell will survive that.

Wow…well thanks for the info, definitely is very helpful to know. Also that’s actually pretty dang cool what that car battery did to the nail.