RC Brushless ESC 45A Black Adjustable Braking Force 1/10 RC Car ESC with External Programming Port Item Type: Brushless ESC Speed Controller for 1/10 RC Material: Aluminum alloy Model: WSDT 45A Continuous Current: Fwd. 45A/version 45A Peak Current: Fwd. 135A/version 135A Resistor: 0.0012Ω Compatible Vehicle Type: 1:10 on road, off road, truck Battery: 4-9 NiMH cells, 2-3S Li Ion cells Motor Limitations: For 2S LiPo or 6 cell NiMH: On the highway: Engines of size 3650 or smaller KV<6000 Off Road, Truck: Size 3656 or KV<4000 small motors For 3S Lipo or 9 cell NiMH: On the highway: Engines of size 3656 or smaller KV<4000 Off Road, Truck: Size 3656 or KV<3000 small motors BEC Output: 5.85V 3A Cooling Fan: Directly from the battery, no need for adjustment Inventory fan can be used in conjunction with 2S and 3S Lipo