30C Continuous(ish) Lipo Discharge

[zeropointbug]

Originally Posted by JThiessen

Yes....your 500hp motor that you operate at 40% of its capacity is going to last much longer, and should be more efficient than a 250hp motor operated at 90-100% of capacity.

As for efficiency, can't really say that, depends on displacement, forced induction or not, whether it's a high speed/low torque, or low speed/high torque, anywhere in between, etc.

[JThiessen]

Originally Posted by zeropointbug

IMO, this video means nothing without stating the brand name, lol, simply calling it a 'name brand' pack doesn't tell us anything.

Why is that?

Originally Posted by zeropointbug

As for efficiency, can't really say that, depends on displacement, forced induction or not, whether it's a high speed/low torque, or low speed/high torque, anywhere in between, etc.

True - shouldn't have thrown that in there.

[zeropointbug]

Don't you think it matters what brand it is? Is it just me?

[jhautz]

I think the point of this whole thing is that the "C" rating is total BS and im sure it is on all prands of lipo. If you did this same test on 10 different brands of lipo you would probably get the same results. Some would take 3 seconds to drop below 3v/cell and some of the better ones might take 2 or 3 times that long, but none would likely stand for a true constant discharge at the C rateing printed on the sticker.

Its all marketing BS.

[zeropointbug]

Maybe so, but I still think it means nothing when they don't state what brand they are using. I could go get a crap brand LiFePO4 cell and test it to the rated C rating and get much lower volts than the manufacturer would provide, does that mean A123's are crap?

[JThiessen]

So that's exactly the type of thinking that they were trying to avoid. If you put a name with it, people will focus on that, and not on the data.

What I read into it, was that we are being fed a C rating number, and being told its important, kinda like Hp ratings. But this one particular experiment shows that a battery can not in fact handle running at its C rating. Just another feather to put into the "use your C rating with an asterik" hat....

[jhautz]

Even if they don't want to publish the names of the lipo brands it would be interesting to me to see them do this same test on a few more different brands and see what results they got. Just to understand how much difference there is from one brand to the next.