Kraton Recommended Batteries for Kraton

Firstarrma said:

My store recommended me to use two of these:
gensacearespammers
7000mAh
11.1V 60C/120C 3S1P 77.7Wh

Anybody has experience with that?

They are huge and the OE battery straps are not long enough. Still need to figure that out.

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Firstarrma said:

Thanks.

Going to ask the store if any 6S available.

Is there any down side to use one 6S instead of 2 3S?

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Firstarrma said:

Thanks.

Going to ask the store if any 6S available.

Is there any down side to use one 6S instead of 2 3S?

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dbdynsty25 said:

My reasoning for going w two 3S instead of a single six is for convenience and it's cheaper to replace a 3S if a cell goes bad. I'll be able to use my packs in a lot more cars/trucks going forward as 3S packs as well. A lot more versatile because of their size.

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jk420 said:

I thought the same and then I read that it's not good to run a battery that has some runs with ones that don't. So now that I've read that idk what to think lol. Since I've already invested in running 2 batteries guess that's what I'm going with lol. What say you guys?

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dbdynsty25 said:

Well yeah I'd keep the two 3S batteries together as best I can. I've got my four labeled so they've all seen the same amount of time. I'm strictly talking about if I ended up getting a new truck in the future that can't handle 6S. But then again what fun would that be?

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NoBudgetRC said:

I am running a SMC 6700mah 90c 4s lipo on my kraton.

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JDurand said:

Hello everyone,

Last October I purchased a Kraton and at that time, my local Hobby store recommended (based on ARRMA's recommendation... according to them) 2 x 3S ONYX 5400mah 50C batteries. These worked great for a number of months when the unthinkable happened, my Kraton exploded. There was nothing left of it, 80% melted. ARRMA replaced the car and the batteries a couple of months ago (Thank you ARRMA!). I would run the car periodically, never bashing it or even really stressing it but the other day, I was at the track (Next to my Hobby store) when after my 15-20min run, I noticed my 2 x 3S ONYX 5400mAh 50C batteries were all puffed out. It did not look normal at all... So I took them to the store and they checked them and said 2 of the 3 cells in each pack were dead and both of these pack were on the verge of explosion. The store proceeded to tell me these ONYX brand batteries are no longer the recommended batteries by ARRMA as they believe the car is pulling faster than the 50C (discharge rating) can handle, thus damaging the batteries. The store is thinking I should go to at least a 60C or higher rating. When I looked up the Kraton specs, the minimum required was 35C 5000mAh.

I wanted to run this past the forum and get your thoughts.

Also I would like to to hear your experience with the various batteries and what you recommend. I would like to stay running 6S with a relatively decent capacity, but at the same time I don't want to have some HUGE batteries which are not meant to fit the car and throws off the Center of Gravity.

I am interested in hearing for all of you...

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Firstarrma said:

My store recommended me to use two of these:
gensacearespammers
7000mAh
11.1V 60C/120C 3S1P 77.7Wh

Anybody has experience with that?

They are huge and the OE battery straps are not long enough. Still need to figure that out.

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Erstadw said:

How fast does your kraton go on this 4s battery with the stock pinion?

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JvG said:

Hi JDurand, it works like this: multiple the amps of your battery with the C rating and you know how much amperes the battery provides. So in your case 5,4A x 50C = 270 amps. The ESC draws 150 amps so the batteries should be more than sufficient to power the ESC.
You need to have batteries that provide at least 25% more power than what the esc draws, so 190 amps minimum.
But i do notice a big difference when driving in high temperatures. That's when you really experience the difference between cheap and expensive batteries.

I hope this helps you!

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Jigstick said:

Im confused by this. If this math is correct then even the largest 6S SMC LIpo battery isn't providing enough power. the SMC 7400mAh 90c is only rated at 149 amps. if the Kraton ESC is drawling 150 amps, and you need 25% more, you would require a battery providing 187.5 amps. What am I missing here

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JvG said:

Hi, a 7400mAh 90c battery will be rated 7,4x90=666 amps. How do you get to 149 amps?

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chevys10zr2003 said:

Check out this page on SMC's website for their rating. It basically says that C ratings don't directly correlate to amps since most companies put made up C ratings on their packs to make them seem better than they are.

https://www.smc-racing.net/index.php?route=product/category&path=67_158

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JvG said:

Discharging a 5000mAh battery on 40c constant means 200 amps discharge and it will take 12 minutes to drain the battery.

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chevys10zr2003 said:

Wouldn't a 40C constant discharge on a battery mean that it would drain in about a minute and a half? I believe 12 minutes would be 5C.

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