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Old 02-01-2005, 09:11 PM   #1
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Default Milliamps?

Could someone explain the whole milliamp thing to me?

I tried to find out by searching but couldn't find any relevant info. Best I found was one website said higher milliamps were good for high-drain devices like cd-players, and lower milliamps were good for low-drain devices like rc cars . I wonder what rc cars they were talking about, because all of mine I consider high-drain....

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Old 02-01-2005, 09:19 PM   #2
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I think milliamps is just how much power the cells can hold, more milliamps, more run time
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Old 02-01-2005, 09:29 PM   #3
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A milliamp is scientifically one thousandths of 1 Amp, and Amps=Watts/Volts.

But, for r/c, all you need to know is that milliamps is the capacity of energy that batteries hold. Higher capacity means that the battery will last longer, or is able to output more power in the same amount of time.
Hope this helps.
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Old 02-01-2005, 09:47 PM   #4
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He's right, but high numbers doesn't mean high performance. Battery science is big, but at least you got the capacity thing down now.
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Old 02-01-2005, 09:50 PM   #5
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So 3000mah batteries won't make my car run any faster than 1500mah batteries? But will make it run longer?

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Old 02-01-2005, 10:10 PM   #6
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3000mah will last longer than 1500's. It will also most likely have better performance.
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Old 02-01-2005, 10:16 PM   #7
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there ar e a lot of things to look at bout batts....

here my 2 cents.

higher amp capacity- longer run time. go for 3300mah or the new 3700 or 3600. better yet, wait for the 4000mah batts. with higher capacity batts you can use lower wind motors and play around with your gearing without worrying about your batts dumping.

internal resistance-- go for the lowest. the lower the resistance, the cooler the batteries and youll get more punch.

average voltage- the higher the better......you get mor power!!!
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Old 02-02-2005, 12:20 AM   #8
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Correct, to get more power from your motor, you need more voltage & lower internal resistance(which will vary from one kind of battery to another, that's also why the GP3300 cell is so popular in racing circles), & the mah number simply refers to how long it'll run on a charge. And to gibe you some idea of how much longer, think of it this way, if you put a 1 amp load on a 1500mah battery, it should take about 1.5 hours to fully discharge, but the same 1 amp load on a 3000mah battery should take it 3 hours to fully discharge.....
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