ZTW G2 40A 2-4S 5V/6V 4A Shark ESC Built-in Swithcing BEC Water-Cooling Bidirectional Waterproof Brushless Speed

ZTW Shark G2 40A ESC 2-4S Built-in Swithcing BEC 5V/6V 4A Water-Cooling Bidirectional Waterproof Brushless Speed Controller for RC Boat Marine

ZTW G2 40A 2-4S 5V/6V 4A Shark ESC Built-in Swithcing BEC Water-Cooling Bidirectional Waterproof Brushless Speed

The ZTW Shark G2 Series brings next-generation 32-bit microprocessor control, true bidirectional operation, and integrated water cooling to every RC boat hull from a 20A pocket runner to the 120A flagship. Marine-grade conformal glue seals every component. Splash, mist, and humidity stay out even after a flip. A flat aluminum plate bonded to the PCB transfers heat to the integrated water-cooling tube, where flowing water carries it away. High-current MOSFET switches handle burst currents up to 140A on the 120A model without overheating. Start-up / over-heat / low-voltage / phase-loss / signal-loss five independent safeguards protect your pack and motor. The Shark G2 is more than an ESC it's a complete marine power platform. Each highlighted point on the image reveals the engineering behind a key feature from the 32-bit microprocessor to the pre-soldered XT60/XT90 plug. Hover or tap to explore. Deep-V Hydroplane 32-bit MCU + linear throttle response means precise corner handling at peak speeds. Realistic Operation Soft brake + adjustable acceleration profiles match the inertia feel of full-size vessels. Twin-Screw Maneuvering True bidirectional control lets you spin in place one motor forward, one reverse. DIY ROV Linear forward+reverse with full power in both directions enables precision yaw and station-keeping. Wind-Drift Counter Use reverse on one hull while forward on the other to counter wind drift. ZTW Shark G2 20A ESC 2-4S ZTW Shark G2 30A ESC 2-4S ZTW Shark G2 40A ESC 2-4S ZTW Shark G2 50A ESC 2-4S ZTW Shark G2 60A ESC 2-6S ZTW Shark G2 80A ESC 2-6S ZTW Shark G2 100A ESC What's included in the box? One ZTW Shark G2 ESC (size you ordered), pre-soldered with XT60/XT90 battery plug and 3.5mm/4mm bullet motor connectors. LCD Program Card G2 is sold separately. what do the different beep sounds mean? "Beep-Beep-"every 2s=Signal lost "Beep Beep-Beep Beep-" every 2s=Temp protection "Beep Beep Beep-Beep Beep Beep-" every 2s=Low voltage "Beep - Beep -"every 200ms=Throttle is not at 0% "Do-Ra-Mi - Do-Ra-Mi-"every 200ms=Voltage out of supported range What size silicone tubing fits the water-cooling port? 2.41 mm ID 4.0 mm OD silicone or PVC tubing ( 3/32" 5/32" in inches). 27 mm length for 20-60A models, 32 mm for 80-120A. Compatible tubing is available at any RC hobby shop, marine supply store, or McMaster-Carr. Can I use it in saltwater? The Shark G2 is splash-proof and humidity-resistant inside the hull. However,prolonged submersion in saltwater is not recommended-rinse the ESC with fresh water after any saltwater exposure to prevent long-term corrosion of the cooling tube fittings. Which Shark G2 amperage do I need? Match the ESC continuous current to at least 1.2 your motor's rated peak draw, then size up. As a rough hull-length guide: 20-30A for boats under 500 mm, 40-60A for 500-900 mm, 80-100A for 900-1200 mm, 120A for over 1200 mm or twin-motor builds.

Brand: ZTW

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Key Features

• ✅ TRUE BIDIRECTIONAL FORWARD & REVERSE** Switch between "Forward Only" and "Forward + Reverse" modes via transmitter or LCD program card. Linear throttle response in both directions makes the Shark G2 ideal for twin-screw boats, catamarans, deep-V hulls and underwater thrusters that need precise reverse maneuvering not a half-power emergency reverse like cheaper ESCs.
• ✅ 32-BIT MCU + SR SYNCHRONOUS RECTIFICATION** A new-gen 32-bit microprocessor with optimized BLDC algorithm delivers smoother startup, higher RPM ceiling and rock-steady throttle linearity. Synchronous Rectification cuts MOSFET conduction loss, lowers ESC running temperature and extends battery runtime proven energy-saving on 6S high-load runs.
• ✅ WATERPROOF + INTEGRATED WATER-COOLING PLATE** Internal PCB is fully potted with marine-grade glue against splashes, mist and humidity inside the hull. The flat aluminum water-cooling plate channels water across both the FET and capacitor zones, holding the ESC well within safe temps even on extended high-throttle runs. **Compatible with standard 3/32" ID 5/32" OD silicone or PVC tubing easy to source locally.**
• ✅ ADJUSTABLE SBEC, DRIVES STRONG SERVOS** Built-in switching SBEC is selectable 5V or 6V **4A continuous on 20A/30A/40A/50A models, 8A continuous on 60A/80A/100A/120A models** enough headroom to power high-torque rudder servos, FPV cameras, lights or a water pump without a separate UBEC. Wide input 2-4S LiPo (20A50A) / 2-6S LiPo (60A120A).
• ✅ 5 PROTECTIONS + 2 PROGRAMMING WAYS** Start-up, over-heat, low-voltage cutoff, phase-loss and signal-loss protections guard your motor and pack. Program every parameter (timing / brake / battery cells / cutoff / direction / SR / acceleration) via stick on the transmitter, ZTW LCD Program Card G2.

Product Details

• ✅ Item Weight: 0.05 Kilograms
• ✅ Power Source: Battery Powered
• ✅ Material Type: Aluminum
• ✅ Theme: Boat

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