Quote:
Originally Posted by Crunchmeister
Wow. That side makes my head spin and eyes cross. I've been searching it for the past 20 mins and still as clueless as before I went there. Wish I knew more about lipo batteries, their C and S ratings, and so forth so I knew what to look for.
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S is the number of cells
2S = 7.4v
3S = 11.1v
The C rating refers to it's continuous discharge rate, your mah rating also factors in here
You take you C rating times the amount of AMPERAGE in the battery, to get the safe discharge rate
So I've got a 7.4v 1600mah 20C LiPo
1600mah/1000 =
1.6 Amps
20C x 1.6A = 32 Amps
Now at top performance, most setups won't draw more than 18 Amps, so get a LiPo that's rated for atleast 24. And hook up a 20A fuse for safety.
The motor's only going to draw what it wants to draw, so having a C rating above what your motor is drawing isn't going to increase your speed (going from 20C to 30C).
But if your not providing the motor with enough amperage, say your using a LiPo that can only supply 10 Amps when your motor wants 16 Amps, well Imagine a Lipo with a big frowny face on it...
So when looking for a LiPo, a good place to start on hobbyking is "2S 20C"
From there you can see all the 7.4v 20C lipo packs, check out all the dimensions and see what works for you.
If your looking for something mini-battery sized, it will be around 1600-2200mah
And if your still stumped, just tell me what size of NIMH your using and what voltage of LiPo you want and I'll find you a battery lol