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› ESC question when using higher C rated lipos
02-17-2011 05:17 PM  6 years agoPost 1
Screwhead

rrApprentice

Tucson Arizona USA

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Does lipo puffing have anything to do with the choice of ESC? If I want to step up on the C rating in the lipos, do I also have to upgrade my ESC too? I need to replace my puffed lipos.

I don't mind paying slightly more for higher C rated lipos if they last longer, but if I also have to replace the ESC, forget it. I'm just gonna be doing my little hoverings anyway.

Suppose I currently use a 20C rated 2200 mah lipo, then the max current is 44 Amp. If I want to upgrade to a 40C rated 2200 mah lipo, then the new max current would be 88A. So do I have to get a new ESC to withstand the 88A max draw? Am I correct?

More specifically I'm worrying about the stock ESC that came with the old Trex 450SE V2. This 450's ESC can take a 17C, 20C, 25C 3S lipos, no problem (but I puffed some of them when I flew a 500 heli with 6s using two of them.) I haven't looked up the specs of this stock ESC yet (I will later) but I wonder if I have to upgrade the ESC if I want to upgrade the lipo C rating.

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02-17-2011 05:25 PM  6 years agoPost 2
BarracudaHockey

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Jacksonville FL

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The C rating of the battery is how much current its capable of giving if asked without damage. It wont push more current, it will just deliver more if demanded and run cooler at lower discharge levels than batteries that are close to their C rating

Andy
AMA 77227
http://www.jaxrc.com

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02-17-2011 09:32 PM  6 years agoPost 3
helicraze

rrElite Veteran

Victoria - Australia

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If you are just hovering it won't matter if you get higher C rating. If you esc is borderline for the rating and you fly harder then that increase in C rating will likely require you to buy a new Esc

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02-17-2011 09:48 PM  6 years agoPost 4
BarracudaHockey

rrMaster

Jacksonville FL

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Sorry but that doesn't make any sense.

If he's drawing more amps with his setup can handle, then yes he will need a new ESC, that has nothing to do with simply going to a higher C rated battery.

The question is, will getting a higher rated battery neccesitate a new ESC, the answer is no. Simply getting a battery capable of delivering more amps, wont make the system ask for more.

Andy
AMA 77227
http://www.jaxrc.com

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02-17-2011 09:54 PM  6 years agoPost 5
helicraze

rrElite Veteran

Victoria - Australia

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Sorry but thats not quite true.

If you push a heli and the lipo is upto it, then it will deliver.

Rememeber back when the new generation lipos came out? A lot of people had to replace their esc as they would thermal and shutdown when previously on their lazy FP packs it was no issue.

In this guys case, its likely not a problem as he hovers. In other cases it may be neccessary.

The old jazz 55 used to work on 10S 600 size helis, not any more!

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02-21-2011 10:27 PM  6 years agoPost 6
Screwhead

rrApprentice

Tucson Arizona USA

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Hi thank you much for your responses. I'm back from the weekend. A few different people have told me higher C rated lipos last longer because they can take more abuse. So I'm will step up in the C rating. I'm currently using 25C lipos and also very old 17C lipos, so maybe I'll try 30C or 35C to see if I can tell any improvement in lipo's life longevity.

Baraccuda & Helicrase thank you. Though your opinions may differ in details, I hear both of you agree on that I am ok with using the stock ESC with the higher C rated lipos? My stock 35A ESC then would just underutilize the high C rated lipos capability without being damaged?

My only reason to get a higher rated lipos is that people say they last longer (than lower C rated lipos). As long as the 35A stock ESC doesn't get damaged with a 30C or 35C lipo, I have no complaint and no reason to upgrade the ESC.

You are all very knowlegable. Thank you.

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02-21-2011 10:48 PM  6 years agoPost 7
helicraze

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Victoria - Australia

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In your case you will be fine i think

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02-21-2011 11:33 PM  6 years agoPost 8
Flying Brian

rrElite Veteran

St. Clairsville,​Ohio

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The old jazz 55 used to work on 10S 600 size helis, not any more!
That's scary, as I just bought and installed the JAZZ 55 to my RAZOR 600.

Im sure it will work and very interesting read so far.

"I just don't Listen" "

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02-21-2011 11:34 PM  6 years agoPost 9
Noobyflyer

rrVeteran

Clearwater, FL

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You say last longer, but I beg to differ.

I have 25C batteries that have lasted me over 100 flights and are still going strong. I opted to get 40C batteries and got 12 flights--granted I had to dig it out of the ground mid way through flight 12, but it only lasted 12 flights.... I kid, I kid.

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