Battery C rating question
#1
I am looking to upgrade my 7.4 v lipo from a turnigy 20c 5000 mh to either an thunder power 60c or a max amps 150c
My question is will the higher c rating make a large change in power?
I race 17.5 stock short course and the boost in power could make a big difference.
Also does any know what 17.5 brushless motor works with the smart sense function.
thanks for the input.
My question is will the higher c rating make a large change in power?
I race 17.5 stock short course and the boost in power could make a big difference.
Also does any know what 17.5 brushless motor works with the smart sense function.
thanks for the input.
#2
Well, your 20c 5000mAh is prividing 100A as long as your motor isnt pulling more than 100A then you wont see any difference. Say your ESC is rated at 70A and motor at 60A and your lipos you have now are providing more than enough needed to run the motor to it capabilities. Now if you had a MMM 2200kv thats rated 120A as the ESC is rated 120A aswell then the higher "C" rating, lets say...30c 5000mAh would provide you more than 100A and the motor will take more than 100A and run harder. Do you know what Im sayin? There is a formula to find the amps(its like c rating divided my mAh rating, or something like that)
#3
Tech Champion

Joined: Oct 2007
Posts: 7,341
Yes you will see a difference, especially with the Thunder Power.
More to it than just maximum amp draw. Higher C capable batteries essentially must have a lower internal resistance to avoid burning up under high discharge rates. This equates to higher voltage under load, even moderate loads. (or less voltage sag if you will)
Thus significantly more punch, and a touch more top end. Very easy to demonstrate.
Batteries are more important in Stock oddly enough, mod can always motor up.
More to it than just maximum amp draw. Higher C capable batteries essentially must have a lower internal resistance to avoid burning up under high discharge rates. This equates to higher voltage under load, even moderate loads. (or less voltage sag if you will)
Thus significantly more punch, and a touch more top end. Very easy to demonstrate.
Batteries are more important in Stock oddly enough, mod can always motor up.
#4
Yes you will see a difference, especially with the Thunder Power.
More to it than just maximum amp draw. Higher C capable batteries essentially must have a lower internal resistance to avoid burning up under high discharge rates. This equates to higher voltage under load, even moderate loads. (or less voltage sag if you will)
Thus significantly more punch, and a touch more top end. Very easy to demonstrate.
Batteries are more important in Stock oddly enough, mod can always motor up.
More to it than just maximum amp draw. Higher C capable batteries essentially must have a lower internal resistance to avoid burning up under high discharge rates. This equates to higher voltage under load, even moderate loads. (or less voltage sag if you will)
Thus significantly more punch, and a touch more top end. Very easy to demonstrate.
Batteries are more important in Stock oddly enough, mod can always motor up.
#5
Yes you will see a difference, especially with the Thunder Power.
More to it than just maximum amp draw. Higher C capable batteries essentially must have a lower internal resistance to avoid burning up under high discharge rates. This equates to higher voltage under load, even moderate loads. (or less voltage sag if you will)
Thus significantly more punch, and a touch more top end. Very easy to demonstrate.
Batteries are more important in Stock oddly enough, mod can always motor up.
More to it than just maximum amp draw. Higher C capable batteries essentially must have a lower internal resistance to avoid burning up under high discharge rates. This equates to higher voltage under load, even moderate loads. (or less voltage sag if you will)
Thus significantly more punch, and a touch more top end. Very easy to demonstrate.
Batteries are more important in Stock oddly enough, mod can always motor up.
Yeah it is true that in stock class batteries do mean alot.
Also, hobby partz has 35c 2 cell lipos for $35 ea.
#6
Tech Champion

Joined: Oct 2007
Posts: 7,341
Nit picking pet peeve semantics perhaps, but the load doesn’t pull from the battery, the battery voltage does indeed drive the load. A higher voltage drives harder, pushes more current. And it’s a squared function from voltage to power so apparently small voltage differences can be fairly significant in terms of power.
There are many other batteries that approach, perhaps even match the TP for performance, but none have been proven to actually be better that I am aware of. Not claiming perfection, they can be messed up just like any lipo though. Note I don’t own any TP, just my observations and research.
Some will disagree, that’s natural. Most all newer lipos are incredible batteries compared to what we had before!



