Waterproof Brushless Esc WP-10BL60-RTR 60A 2-3S Lipo   100% Brand New Water-Proof Sensorless Brushless Speed Controller Cells LiPo:  Suggested application:1/10 Scale RC Car, Truck, Buggy WATERPROOF ESC 1) For 4-6 cells NiMH or 2S Lipo: you need do not change the 5V cooling fan on the ESC.              2) For 7-9 cells NiMH or 3S Lipo: you must change the Original 5V cooling fan to 12V cooling fan, or supply the 5V cooling fan from the receiver(5-6V). BEC: 6V/2A Dimensions: 48.5mmx38mmx32mm Note:Please remove the cooling fan when running the ESC in water, for more information , Package Quantity:  1set  Banana Connectors： 3.5