Lipo 2s help

[Chris105]

Will a lipo with a 40/50c rate give me more speed than say on with 30c I'm very new to using lipo and finding it confusing

[cutting42]

In short, it won't affect the top speed but it might effect the acceleration.

In more detail:

The c rating is the batteries ability to deliver amps or current to the ESC and therefore the motor. The voltage actually determines the ultimate speed of the motor but the current determines how quickly it can get there.

The c rating is the multiple of the battery capacity that can be sustainably delivered. If you have a 4000mah battery (which is the same as 4 amps) and it is rated at 30c, multiply 30 by 4 amps and you get 120 amps, switching to a 4000mah 50c battery will allow 200 amps to be supplied.

Now also note that a Motor and ESC will only take as much power as they are rated for so if you have a 120 amp ESC it will only take 120 amps continuously so within either batteries capacity above.

However racing ESC can also take a higher peak current for a short time sometimes up to 3 times as much so a 120 amp ESC could momentarily ask for 360 amps. This is when having a higher rated battery will help. If your ESC and Motor ask for more current than the battery is capable of under hard acceleration, you can stress the battery causing shorter life and possibly puffing the pack. That is why some batteries quote a peak c rating as well as they are designed to deal with higher peaks.

Most racing packs are in the 50c - 100c range. My LRP packs are 4700mah and 55c/110c so 258.5 amps continuous and 517 amps peak.

Hope this helps, sorry if it confuses you further.

[Welshy40]

Buy hpi 5600 saddles, great punch and good cells.

[Chris105]

Thanks, that made perfect sense