Dual Turnigy Aerodrive SK3 - 6354-260kv with 2 Serial Multistar High Capacity 8000mAh 6S 10C Batteries

ESK8 Electronics
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Hi! Sorry for hijacking this thread but I have a few questions in regards to the battery OP had initially thought of purchasing.

I would like to know why @Nordle thinks that they are crappy, and what do you mean by 4C constant discharge when it says 10C discharge?

Furthermore, I would like to know why the general consensus is that these batteries are terrible.

I am considering pairing this with the following motor: Turnigy D5035-125KV Sensored Brushless Motor

As far as I know, these batteries are good for up to 80A motors (10C x 8Ah). This motor is 45A so on paper, this should work right? (2x these batteries in serial)

Moreover I would like to know what @TarzanHBK Celldrifs means and how it relates to 10C. Why is 35C recommended?

Thank you all!

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A guy from Endlesssphere named ā€œicecubeā€ tested these and rated them 4C or less, because the quality is really bad and they donĀ“t hold up 10c discharge. They are good for low discharge things, but not our application. If you only run low currents with only flat lands and youĀ“re a lightweight, you may be ok with them.

About Voltage sag. YouĀ“ll find some infos in this thread:

and here:

To avoid sagging as good as possible, use a battery rated as high as possible or the same battery a few times in parallel to take the load combined.

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I ordered my VESC direct from Maytech. No problems with it (10S BLDC). I also own a TB VESC. Funny how some people here who have no personal experience with either brand are quick to parrot ā€œitā€™s shitā€.

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I think so because i read a topic on ES-forums where a trusted member tested them and showed his data there. And the graph showed inaceptable voltage sag above 4C. The manufacture say 10C because that sounds nice ya knowā€¦

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@Nordle So, for this D5035-125KV motor - which has a max amperage of 45A - will this battery be sufficient? (x2 in serial)

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Do your maths Iā€™m not here for that. but be sure to take the 4C value not 10C

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I have done the maths already. But it was more of a theoretical question. The thing is, limiting the VESC to say 30A to drive the motor which is 45A would still work, correct? (albeit with slower speeds)

I did some research on the whole 4C topic and it seems like thereā€™s not sufficient grounds for it actually being 4C (as opposed to 10C). Could you point me to some good evidence? I want to be absolutely sure that it is actually 4C. Because if it turns out to be 10C, then it is a good purchase.

Thanks :smile:

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Same speed but less torque instead. I told you where i read it, if you donā€˜t believe, search for it.

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Shouldnā€™t that depend on how false the burst is? It says 20c for 10 sec but letā€™s assume 8c (double of the 4) which would at max give 64 amp which is ā€œalotā€ over the max of the motor. Shouldnā€™t they in that case work when accelerating, then keeping the speed does not drain many amps. Does it then really hurt the tourqe that much? Disclaimer: Iā€™m pretty new at this but I donā€™t see a big problem with them, would love for someone to criticize my way of thought, thanks! :slight_smile:

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A battery doesnt like to be maxed out all the time. You have to leave some headroom. Otherwise it will loose capacity fast and you have to buy a new one. Lipos are even more sensitive to that than liion cells. Leave them some room and they tread you well. Best to pick some high rated good quality lipos, like some 60c Graphene pack. If you donā€™t wanna spend this much get some cheaper zippys with 35c like mentioned above.

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