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« on: February 19, 2015, 05:24:10 PM »
kmkn08
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Hi there,

I got the battery and ESC with below specification.

Specification:
LiPo 4S 25C 6000mAh Battery and
80 Amp ESC 

My question is whether the 80Amp ESC will take 25C 6000mAh battery without burning or I need to select the ESC with 150 Amp More.  My motor eats 70 Amps current at full throttle.

or is it right to get 4000mah with 20C rating.

Regards
KMKN
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« Reply #1 on: February 19, 2015, 05:32:34 PM »
IndianHobbyShop
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The Load (motor) is always the deciding factor in electronics.
Since this motor can't consume more than 70Amps, an 80Amp ESC (or just about any size above 80 Amps) would be fine.

Coming to the battery,
A 4000mah 20C battery can provide a maximum of 80Amps Constant
A 6000mah 25C battery can provide a maximum of 150Amps Constant
But since it's the motor which decides how much Amps it's going to consume, you can use any of these batteries since both can easily provide what the motor can demand even at full load (i.e. 70Amps)

To Sum it up,
If you need more flight time, and weight is not as issue then get the 6000mah 25C otherwise get the A 4000mah 20C. Both are fine.
Hope it helps!
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« Reply #2 on: February 19, 2015, 05:50:40 PM »
Rcjabalpur
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The battery has nothing to do with your esc , the motor is the factor which pulls the current . If your motor pulls more than 80amp then change your esc , but if it is under that range (including burst range) then there is no need to do so . Your given battery can provide 150 Amps (mah * c) so your battery has enough juice , it will provide sufficient power without coming under load .
Ps - if your motor pulls say 60 amps then get a esc capable of doing 70 amps (always leave a bit of margin)
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« Reply #3 on: February 20, 2015, 12:18:23 PM »
kmkn08
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Thanks all,  Cleared my  doubt on the relationship between the ESC rating and battery amperage rating.

I got another question, what happens to the capacity, discharge rating and voltage of a battery if we connect 2 nos. Lipo batteries of 3000mah 20C 4s1p each in series with connector cable available in the market. 

also what happens if we connect the same in parallel.
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« Reply #4 on: February 20, 2015, 12:23:14 PM »
IndianHobbyShop
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When you connect 2 such LiPos in series you get a 8s 3000mah 20C.
When you connect them in parallel, you get a 4S 6000mah 20C.
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« Reply #5 on: February 20, 2015, 12:25:46 PM »
kmkn08
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Sorry, one more thing.

I am looking for two items, they are Lipo battery and propeller.

The spec of items are:

LiPo 4S 6000mah 30C
13X8E Propeller

I have checked all the stores, none of them have stock.  Help me if you have come across any of the stuff with this spec.  The main thing is I am not getting even a piece of 13x8E prop.
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« Reply #6 on: February 20, 2015, 12:46:06 PM »
Rcjabalpur
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I got mine 13*8 prop from rcbazar , the prop was not well balanced though . What motor are you going to use with this prop ? Which model ?
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Hobbico next star | sky surfer V2 | .46 High wing trainer | O.S .46 Ax | O.S .46 La | O.S 55 AX | super tigre .10 motor | Spektrum DX5e | FUTABA 10J | Hitec X4 Eighty | Phoenix Scanner | Multiplex Twinstar ii

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« Reply #7 on: February 20, 2015, 04:04:21 PM »
kmkn08
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I am using Avionics N4250 650kv 1150W motor purchased from RCbazaar.  I am going to use 4S Lipo 6000mAh battery with 80Amp ESC.
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