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Old Yesterday, 01:59 PM
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4s quad lipos, any definitive winners?

So, I have been looking online at test of different lipos. All have different C ratings and seems so opinionated or impractical. One may say 130 C burst, and never achieve it, but other say 37c constant, and outperform others. I know there are graphs and data saying this battery drops .02 volts less than this one, or this one has a fancy label. I dont care about that. I want real world performance.

My setup is RS2205 Red Bottoms on a 5x4.5x3 bull nose. Since these motors are power hungry, I am worried that my Nano Tech 1300 mah at 90C burst are not good enough.

Now the Tattu are too pricey for me, but the Bonka 65C, SMC True Spec, Graphene and others all seem to hover around the $25. Heck, even the Multistar Gold Spec seem good.

So with all this, what have yall found in testing? I think $25 per battery seems to be the sweet spot. But cheaper is better right?
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Old Yesterday, 05:08 PM
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Quote:
Originally Posted by Pyrofan View Post
So, I have been looking online at test of different lipos. All have different C ratings and seems so opinionated or impractical. One may say 130 C burst, and never achieve it, but other say 37c constant, and outperform others. I know there are graphs and data saying this battery drops .02 volts less than this one, or this one has a fancy label. I dont care about that. I want real world performance.

My setup is RS2205 Red Bottoms on a 5x4.5x3 bull nose. Since these motors are power hungry, I am worried that my Nano Tech 1300 mah at 90C burst are not good enough.

What is a "RS2205 Red Bottoms"? A link would be nice so we all know exactly what it is you are asking about.

And what is the battery cell count? Just saying 1300mAh is meaningless. You must always state the cell count (voltage) and the mAh (capacity).

How much current are you pulling? You need a wattmeter to determine this. (google "rc wattmeter" and you find many examples.)
Without knowing the current draw it's impossible to say how much battery you really need.

Also do you realize that if you were pulling 90C from your battery, then runtime would be about 40 seconds. So I don't thing having a discharge of 90C would be a requirement. A 10C discharge would run a LiPo completely empty in 6 minutes.


Now the Tattu are too pricey for me, but the Bonka 65C, SMC True Spec, Graphene and others all seem to hover around the $25. Heck, even the Multistar Gold Spec seem good.

So with all this, what have yall found in testing? I think $25 per battery seems to be the sweet spot. But cheaper is better right?

Not necessarily so. For instance Thunder Power are excellent batteries and many report having them in service for multiple years. However they are expensive. Sorry but I do not have exact figures.
May I suggest you read this: https://sites.google.com/site/tjingu...arging-how-tos
There is a great deal of good information on LiPo batteries there.

Glen
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Old Yesterday, 05:16 PM
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Originally Posted by ggcrandall1 View Post
May I suggest you read this: https://sites.google.com/site/tjingu...arging-how-tos
There is a great deal of good information on LiPo batteries there.

Glen
Sorry, I used some short hands and figured people new what they meant. Their is no battery forum in the quadcopter section.

The Emax RS2205 motors are what I run on my quadcopter. They pull around 30 amps each. http://www.emaxmodel.com/brushless-m...pec-motor.html

As for what size my 1300 mah pack is, I figured that was understood given that the descussion is about 4s lipos. But to be explicit. They are 4s 1300 mah Nano Tech with a 90c burst.

I am very familiar with Lipo batteries. I know that most C ratings are highly inflated and their is pretty much no battery that can supply 120 amps in the 1300mah size.
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Old Yesterday, 05:24 PM
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Several results in Multirotor Power Systems.
Some:
http://www.rcgroups.com/forums/showthread.php?t=2267815
http://www.rcgroups.com/forums/showt...y#post33873115
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Old Yesterday, 05:26 PM
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Originally Posted by cmdl View Post
Yes, and I even posted about this in one of the sections over there. But their was little response. I think the mods should add something over there like this here. The problem is, all the search results are old. New brands come out every month.
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