Very...if your car is around 10 pounds u can run a higher kv say 2650 that will limit u to 4s but its just about perfect especially if you run a hot pack!have fun with what ever you get learning the hobby is just as fun as running your model
Your c rating is your constant amp's.your s rating is your cell number,they use an s for some reason so a 2s pack is 2 cells and the higher your c rating is the more amp load your pack produces.so higher the c rating the hotter your pack is also the higher your mah rating is the longer it will...
Yes i use two 7.4 volt 2s batterys connected in series to deliver 14.8 volts to my esc ..but yes its two different packs .but you can run 1 4s pack depends on if your saddeling them or you have the one battery tray.
I have the ofna sste with a hobby wing 100 amp esc and am running the neu/castle 2650 kv and 5ooo mah 25c 2s × 2 for 4s and this thing is a monster.oh..my point.my packs are onyx and I'm very impressed with them also