[Chilly Duncan]

Latest from MaxAmps.com:


Looking to save a little weight for your next race? Our new 4000mah 150C cells will do the trick. With the lower mah and the high discharge rate you are getting the best bang for the buck. Perfect for most 1/10th scale setups.

More information on these exciting packs can be found here: http://www.maxamps.com/products.php?cat=370

[andystoybox]

Not so sure the inflated rating is in agreement with the 14 gauge wire your using. Also, aren't Deans connectors only rated for 50 amps or 100 amps at the most?

[Cain]

Maxamps True C rating is a burst rating unless something has changed recently. When I asked them to get an idea of what a continous rating, I was told to take half of the True C rating to get an estimate.

So these packs are 70C in a continous C rating world.

Maxamps used to have a breakdown on their website stating what True C rating meant and why the used it but I was told they removed it as it was confusing people.

Personally, Since pretty much everyone is used to a continuous rating, Seems the True C rating is more confusing, at least to me based on what I am seeing continously asked concerning their ratings.

[rccardude04]

They'll say whatever they want to say, but to me it is and always has been an excuse to put a huge number on the pack so it would shine above everything else. It's good marketing for n00bs, not so much for those of us with more than 20 minutes of experience.

-Eric

[andystoybox]

Aww, c'mon. I almost bought the whole hype and i've been doing this hobby for at least 21 minutes. Give their marketing team a break. They just got there from Trinity.

[kufman]

Here is a thought. 150*4 = 600A. Assume the internal resistance is something like 1 milli-ohm (a reasonable number in my experience). The power dissipated in the pack at 600A will be 600^2 * 0.001 = 360W. It will not live long at that current. Lets try half that number. 300^2 * 0.001 = 90W. Still a lot of heat wrapped up in shrinkwrap. Don't think it would make an whole discharge at that current either. In all honesty, any C-rate that is above 35 or 40 is just pure marketing. The wire can't take it, the connector can't take it and what kind of motor and ESC could handle 4,440W of power (150C, 2S)?

[andystoybox]

Maybe they are going back to the Jensen radio amplifier days of WLS rating. They could make a shoebox amplifier make a 1000 watts but only When Lightning Strikes.

[ss13t]

Originally Posted by Chilly Duncan

you are getting the best bang for the buck.

Ahaha aha ahahahahahahahaha!!!!

[fastharryDOTcom]

Originally Posted by kufman

Here is a thought. 150*4 = 600A. Assume the internal resistance is something like 1 milli-ohm (a reasonable number in my experience). The power dissipated in the pack at 600A will be 600^2 * 0.001 = 360W. It will not live long at that current. Lets try half that number. 300^2 * 0.001 = 90W. Still a lot of heat wrapped up in shrinkwrap. Don't think it would make an whole discharge at that current either. In all honesty, any C-rate that is above 35 or 40 is just pure marketing. The wire can't take it, the connector can't take it and what kind of motor and ESC could handle 4,440W of power (150C, 2S)?

why don't they just put a 1.21 giggawatt burst rating on the label and get it over with...

[Grizzbob]

Originally Posted by fastharryDOTcom

why don't they just put a 1.21 giggawatt burst rating on the label and get it over with...

And then offer a Flux Capacitor for the car so it can go fast enough to achieve time travel....