Looking for an electronic speed controller (ESC) for your R/C car than can handle both 1-cell (1S) and 2-cell (2S) lithium polymer (lipo) batteries has proven to be a difficult landscape to navigate. Some of this has to do with what the market will bear. Typically if you’re running a 1/12 scale car, you’re only running 1S batteries. If you’re running a 1/10 scale car, it’s 2S.

The 1S need for me comes from the fact that here in Minnesota, the local track runs a variant of Vintage Trans-Am (VTA) that uses a 17.5 turn motor and single cell battery. It was a carry-over from 1/12 scale cars that ran on 4-cell NiCad or NiMH batteries. The idea was to keep the VTA cars relatively slow, and to keep the cost down.