What is the lowest C rating I should look at for a LiPo?
#1
What is the lowest C rating I should look at for a LiPo?
Amain has ProTek R/C 2S Li-Poly 15C Car/Starter Box Battery Pack (7.4V/4000mAh) for 40$
NOTE: These batteries only have a 25C burst rating, so they are not particularly good for high current draw applications such as brushless 1/8th scale buggy and truck conversions. They work awesome for 1/10th scale 2wd and 4wd applications, but not for 1/8th scale. We recommend you use a 30C constant current battery for 1/8th scale brushless applications.
This seems like a great price for a few batteries to practice with....but is the 15C rating too low?
This would be for a brushless 2WD vehicle
NOTE: These batteries only have a 25C burst rating, so they are not particularly good for high current draw applications such as brushless 1/8th scale buggy and truck conversions. They work awesome for 1/10th scale 2wd and 4wd applications, but not for 1/8th scale. We recommend you use a 30C constant current battery for 1/8th scale brushless applications.
This seems like a great price for a few batteries to practice with....but is the 15C rating too low?
This would be for a brushless 2WD vehicle
#2
Tech Master
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it depends on what you're useing it for. for a 10.5 or slower 25c or 30c is what all the guys at my track are running. for 8.5 or faster 15c or 20c is sufficiant. for eighth scale electric i'd assume you want a lot of power and a good amount of run time so 20-30c with 4000+ mah should be good. i could be wrong on the eighth scale but it sounds right considering you want speed and time. oh yea i'm not pos. but you might want to try a 3s 11.1v lipo for eighth scale although i'm looking at the orion 3200 3s 11.1v for my 2wd not sure but it might be good.
#6
Tech Master
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Actually your wrong. The lower the turns the higher ampdraw needed. More c = more amps available. Example. Let's say two guys are running 10.5 one guy has a 30 c 4000 and another has a 20 c 4000 if they are geared the same let's say. 19/87 in a t4 the guy with the 30c won't have any more power than the 20 c guy since the ampdraw on the system doesn't exceed the 20 c rating. But if they were both running let's say a 5.5 the guy with the 30 c would have the clear advantage not only in punch but also in top speed. Due to its ability to hold voltage under a higher load where as the 20 c pack would struggle due to its lower amp(c rating ) because the 5.5 would draw much closer/over the c rating
#7
Tech Master
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It doesnt metter what motor you have, i seen people run 30c on a 8.5 and doesnt hurt the motor. I run a 10.5 on a 25c lipo and have no problem, you are going to want a higer C rating on a bigger motor. On a bigger motor on a small C rate lipo you will over heat the lipo and can damage it, you can run a high C rate lipo on a small motor like a 13.5 or a 17.5 you will just have you gear down 1-2 teeth
#10
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Some of the guys at my track (small indoor) won't use the higher C rated batts with a low turn motors. Too Much Punch. Lower C rating makes the low turn motors drivable. For 10.5, 13.5, 17.5, 25C and 30C is a good thing since the motor isn't insane fast already.
#12
Tech Regular
It seems to me to be the wrong way to look at this. I'd rather have good power (higher C rating) getting to my motor and tune it down with the ESC/ transmitter, or better yet have chosen the right motor for the job which won't need tuning down at all in the first place. That way you're not straining the battery and it will last longer.
Just my 0.02$
CODMAN
#13
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GWEED has it right. use the higher C ratings for spec classes like 10.5/19t to deliver the punch. Use the lower 15 C packs for mod, where most of us have more motor than the track calls for anyway.
#14
Tech Champion
iTrader: (33)
So basically you're saying that your choosing your battery C ratings in order for it to act as a punch limiter or slipper clutch? Instead of choosing the appropriate motor for the job or adjusting the punch limiting on the ESC?
It seems to me to be the wrong way to look at this. I'd rather have good power (higher C rating) getting to my motor and tune it down with the ESC/ transmitter, or better yet have chosen the right motor for the job which won't need tuning down at all in the first place. That way you're not straining the battery and it will last longer.
Just my 0.02$
CODMAN
It seems to me to be the wrong way to look at this. I'd rather have good power (higher C rating) getting to my motor and tune it down with the ESC/ transmitter, or better yet have chosen the right motor for the job which won't need tuning down at all in the first place. That way you're not straining the battery and it will last longer.
Just my 0.02$
CODMAN
First off limiting your C rating or "punch" has nothing to do with a slipper clutch or acting as one.
The reason for it is a mod motor has punch like anything 7.5 higher... especially in a 2wd. You will not feel a higher c rated pack as much as if you were running a higher turn motor with less "MOJO"
sooo...... if you have less motor you want the most "punch" you can get
Duh !
#15
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Naa you got it twisted,
First off limiting your C rating or "punch" has nothing to do with a slipper clutch or acting as one.
The reason for it is a mod motor has punch like anything 7.5 higher... especially in a 2wd. You will not feel a higher c rated pack as much as if you were running a higher turn motor with less "MOJO"
sooo...... if you have less motor you want the most "punch" you can get
Duh !
First off limiting your C rating or "punch" has nothing to do with a slipper clutch or acting as one.
The reason for it is a mod motor has punch like anything 7.5 higher... especially in a 2wd. You will not feel a higher c rated pack as much as if you were running a higher turn motor with less "MOJO"
sooo...... if you have less motor you want the most "punch" you can get
Duh !