My Kershaw 12S ESC let the smoke out. I was one of the beta testers for them. I thought it needed more caps. He is selling the 16S version.Anyway the Kershaw ESCs appear to be made in the same factory as the FighterCat ESCs. (I used the same program box) I have (2) 16SS FighterCat ESCs. One of them is NIB. He sent it to me because the firmware wouldn't update. It was running fine but I haven't used my XBE in a while. Lots of power with a 5698 Leopard...in fact I spun my stock plastic wheel hexes.