Lipo battery

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Lipo battery

Post  BIGBOY on Wed Dec 12, 2012 12:26 am

Hey guys what's the numbers on 3s lipo battery's mean 25c 30c any info .
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Re: Lipo battery

Post  Dietzie on Wed Dec 12, 2012 4:20 am

Just googled this up for you
(add 3 w)chargedrc.com.au/Battery-Stuff/read-before-you-charge-your-lipo.html
The c rating is explained about half wayn dow the page
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Re: Lipo battery

Post  BIGBOY on Thu Dec 13, 2012 10:50 am

Thanks mate
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Re: Lipo battery

Post  Dietzie on Thu Dec 13, 2012 11:38 am

No worries mate
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Re: Lipo battery

Post  Rustykaos on Fri Dec 14, 2012 8:29 am

From my understanding the C rate is the discharge rate so the higher the number the more amps can be drawn from it. I'm sure Troy will come on and give you a full proper explanation.
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Re: Lipo battery

Post  REDNUT on Fri Dec 14, 2012 11:27 am

isnt it something like, 25c mean 25amps constant, 30c - 30amps constant?

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Re: Lipo battery

Post  azwa on Wed Dec 19, 2012 6:41 am

i remember troy sayin somethin about discharge.....
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Re: Lipo battery

Post  WIDELOAD on Fri Dec 21, 2012 9:48 pm

You lot are on the money, it's the discharge rate.

To work it out you take the 'C' rating and times in by the capacity in Amp hours.
So for an example you've got a 5000mah, 25c lipo pack. With some simple maths we get the constant amp capacity.

5000mAh/1000= 5Ah
5Ah X 25= 125amps


The one you want to pay the most attention to is the constant rating. The burst figures (the 2nd higher C rating) in my opinion don't matter too much. You want to pick the highest C rating you can afford, it's not going to hurt anything it just means you'll have the amps in reserve to use if you need em.


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Re: Lipo battery

Post  REDNUT on Fri Dec 21, 2012 11:43 pm

but realisticly for crawling your not goint to be drawing 125amps @ 11.1v verry often are you? considering most blokes start off with about a 60amp esc? wouldnt that be the limiting factor?

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Re: Lipo battery

Post  WIDELOAD on Sun Dec 23, 2012 4:38 am

You would be surprised what a crawler will draw in a bind. I've seen amp spikes over 100amps in bind. Homles Hobbies has reported even bigger spikes with some of his super motors.

On average just cruising around a crawler will usually draw less than 10amps.

The main thing i find is if you're use a high C rated pack, they can last longer and provide better power due to less voltage sag under load.
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Re: Lipo battery

Post  BIGBOY on Sun Dec 23, 2012 10:50 am

So the 25 or 30c ones ok then 5000 mah .
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Re: Lipo battery

Post  REDNUT on Sun Dec 23, 2012 1:35 pm

should be more then enough, i just had a look and mine and did a few sums, ive got 264amps on tap...i could weld 5mm plate with that!!!

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