R/C Tech Forums - View Single Post - Courtney Marine Corps Base Off-Road Track Okinawa Japan
Old 12-16-2009, 06:14 PM
  #615  
bando711
Tech Regular
 
bando711's Avatar
 
Join Date: Jan 2008
Posts: 470
Default

Originally Posted by Mr. Bojangles
And one more question...what does the c mean? like 20c or 30c?
I cut and pasted this, but it is very important.

The importance of C values is with discharge though. Say your battery has a 15C discharge rating, and is a 3600mAh – do the basic maths. 3.6 amps x 15C = 54 amps. This means the battery can deliver 54 amps. If you have a motor/esc that can draw 65 amps though, then this battery cannot deliver enough current. Consequently you will either have a slow car, ruin the battery or both. It is important therefore to ensure you get high C cells capable of supplying enough current to your system.


Bottom line, know how much current the motor can draw, how much the ESC can delivery and buy batteries that can do the job. A motor that wants more than the ESC can deliver = hot ESC. Battery not able to provide enough current = hot battery. Over gearing to get more speed = hot motor

My 2 cents
bando711 is offline