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Author Topic: Battery Capacity
350zdriver
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Post Battery Capacity
on: April 21, 2011, 16:11
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So does battery capacity affect the output of the battery or is it more like a fuel tank and just affect how long the battery will last? Thanks in advance for anyones help.

BRUMAS
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Post Re: Battery Capacity
on: April 21, 2011, 20:29
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volts decrease = less power

350zdriver
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Post Re: Battery Capacity
on: April 22, 2011, 18:19
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No I was talking about the mah of the battery. Will I get more performance out of a 5000mah battery than I would out of a 4000mah battery? Or will the 5000mah just last longer.

Jcarte
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Post Re: Battery Capacity
on: April 23, 2011, 00:50
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Depends on the "C" rating of the battery; same "C" rating same performance,5000 will last longer.

Oh by the way nice job on the web site!

Scott
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Post Re: Battery Capacity
on: April 23, 2011, 02:53
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Thanks ... it was fun building it .... the 350zdriver is my test pilot for the website 🙂

jetmech05
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Post Re: Battery Capacity
on: October 29, 2011, 06:41
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Battery capacity is described in mAh (milli amp hour) which means that a 5000 mAh battery in a perfect circuit would deliver 5000 mA for 1 hour. Notice I said deliver mA not mAh...a power source gives amps not amp hours.....
ok now remember that electricity is very lazy.....the only thing electricity wants to do is return to it's source...it must return to its source....if returning to its source means that it has to pass through the load then it will...(load is the servo, receiver, light etc)...but it will get hot...(resistance equals heat) for us heat is not an issue..but this why a light bulb gets hot.
If current flow cannot return to its source it won't do anything....(missing a ground for insistance) which is an open circuit....now if you grab a wire and present the current flow with a path back to source it will pass through you..not just what would have been used by the load but all the current that your body will allow to pass.....your resistance.....
So a short circuit is called a short because you don't pass through a load...the short allows current flow back to source missing any load and you get max current flow lots of heat and a very bright light....
yes there is resistance in a short circuit....the wires themselves have some resisitance....
So your question does battery capacity have an effect on output....no......voltage of the battery, and resistance of the circuit do....the higher the mAh rating of the battery lets you do the work longer....
Now remember I said electricity is lazy....it will only give you what the load needs no more...so you could have a 50 A power source hooked up and not hurt anything as long as the voltage is the same.....
hope this helps you

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