Originally Posted by froggie22

I have a small question, I ordered the hobbywing 120a v2.1 esc and they sent the 120a 1S instead. Now i can hardley tell a difference between them bar the 1S not supporting 3S (I will only be running 2S anyway). The 1S came with a heat sink and fan aswel so thats not a problem.

Does anyone know the difference between them? Should I exchange it or just not worry about it?