This listing is for a brand new ESC which got delivered to us from our supplier with a damaged box. Please see photo. The ESC is brand new and never used. Radiolink COOL 9030 90A Waterproof Brushed ESC Speed Controller With 5.5V/3A 7.5V/3A BEC Fantastic 90A waterproof ESC from Radio Link. Suitable for brushed motors, this ESC supports Li-PO and NI-MH power input and is ideal for BOTH RC cars and RC boats! Speed controller fitted with XT60 connector for Li-PO batteries. We also include a XT60 to Tamiya conversion plug for standard NI-MH batteries (7.2v, 8.4v etc). Features: 1. Built-in switching regulator BEC, the output voltage can be set to 5.5V or 7.5V, easily drive all kinds of standard and high-voltage servos and other external electrical equipment like light and winch. 2. Constant Current 90A, support 2S-4S lithium battery or 5-12 NIMH batteries. Max output current 3A maintains a stable voltage output of 5.2V even in the case of instantaneous high current. 3. Extremely low internal resistance reduce the heat, effectively solve the problem of serious heat generation in a closed cabin for a long time. The maximum withstand current is up to 300A, and the maximum withstands temperature is 150 degrees. 4. Multiple Protection: water-proof protection, battery over discharge protection, over-temperature protection, abnormal voltage input protection, could protect your equipment all-round. 5. Four Working Modes: RC Car Modes: Forward/Reverse without Brake - Forward/Reverse with brake - Forward and brake - Forward/Reverse and brake at the neutral zone. RC Boat Mode: Forward/Reverse 6. 32bits high-speed chip makes the throttle sensitivity up to 2000, perfectly compatible with most cars and boats including both twin-engine models like crawlers, drifting cars, tractor trucks, bait boats, 1/10th scale touring cars, buggies, monster trucks, or tanks, etc. Specifications: -Model: COOL9030 -Constant Current: 90A@18V -Peak Current: 100A -BEC Voltage: 3A@5.5V - 3A@7.5V -Input Voltage: 6~16.8V(NI-MH, Ni-Cd or lead-acid battery); 6~18V(Lithium Battery) -Low Voltage Protection: 6.5V@2S , 9.75V@3S ,13.0V@4S -Internal Resistance: 7 milli-ohm -Constant Temperature of PCB: 100°C -Plug Input: XT60 (we also include XT60 to Tamiya Male conversion lead!) -Plug Output: Receptacle disconnectors -Motor Limit: Brushed Motor Limit with 380/540/550/560/570/800/850 -Drive Frequency: PWM frequency 2KHz -ESC Modes: 5 -Dimensions: 46.6*35.6*21mm -Weight: 49g -Compatible Models: RC Cars and RC Boats