240A Remote Battery Disconnect Kill Switch 12/24V with Display

240A Remote Battery Disconnect Kill Switch – 12V/24V with Digital Display

Take full control of your vehicle, boat, or marine vessel's power with this heavy-duty 240A Remote Battery Disconnect Kill Switch. Featuring an integrated digital display, dual remote controls, and automatic voltage-based shutoff, this switch is engineered to protect your battery, extend its service life, and give you total peace of mind whether you're parked at home or out on the water.

Made in Mainland China.

Key Features

• High-Capacity 240A Rating: Handles up to 240A continuous current and a massive 1000A instantaneous surge for up to 30 seconds — ideal for cars, trucks, boats, RVs, and marine applications.
• Dual Voltage Compatible: Works with both 12V and 24V electrical systems, making it versatile for a wide range of vehicles and watercraft.
• Magnetic Latching Relay Technology: Uses an advanced magnetic latching relay to control circuit disconnection. The ultra-low standby current of just 1mA (0.001A) means virtually zero battery drain when idle.
• Automatic Power Shutoff: If battery voltage drops below 11.8V, the switch automatically cuts power after 120 seconds to prevent over-discharge. When voltage exceeds 13.2V (engine running), remote control is disabled to prevent accidental shutoff while driving — safety built right in.
• Digital Voltage Display: Real-time voltage monitoring lets you keep an eye on your battery health at a glance.
• Includes 2 Remote Controls: Conveniently disconnect or reconnect power from a distance — no need to access the battery directly.
• Negative-Terminal Connection: Negative-side wiring ensures stable, reliable performance and straightforward installation.
• Protect Your Battery: Eliminates parasitic drain from electronics, aging wiring, or lights left on during long-term parking — extending the life of your battery significantly.
• Wide Operating Temperature: Rated for -20°C to 90°C, suitable for harsh environments.

Technical Specifications

What's in the Box

• 1 × Battery Disconnect Kill Switch (with display)
• 2 × Remote Controls
• 2 × Spring Plates
• 1 × Anti-Wear Pad
• 1 × Instruction Manual

Perfect For

Cars, trucks, SUVs, motorcycles, boats, marine vessels, RVs, and any 12V/24V vehicle parked for extended periods. Ideal for seasonal storage, fleet vehicles, classic car preservation, and watercraft protection.

Installation Note

This switch uses a negative-terminal connection for stable performance. Always turn off all power before installation. Refer to the included instruction manual for step-by-step guidance.

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Learn More About Automotive Electrical Safety

For guidance on vehicle electrical systems and safe practices, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: Is this remote battery disconnect kill switch compatible with both 12V and 24V systems?

A: Yes! This disconnect switch is fully compatible with both 12V and 24V electrical systems, making it suitable for a wide variety of cars, trucks, boats, RVs, and marine vessels.

Q: How does the automatic power shutoff work?

A: The switch continuously monitors your battery voltage. If the voltage drops below 11.8V (±0.2V), it will automatically disconnect power after 120 seconds to prevent your battery from over-discharging. When the voltage is above 13.2V — indicating the engine is running — the remote control is temporarily disabled so you can't accidentally cut power while in motion.

Q: Can I install this switch myself, or do I need a professional?

A: Most users with basic automotive knowledge can install this switch themselves. It uses a simple negative-terminal connection and comes with a full instruction manual. If you are unsure about your vehicle's wiring, consulting a professional electrician or auto technician is always recommended.

Q: How much current does this switch draw when idle (standby)?

A: The magnetic latching relay technology used in this switch draws only 1mA (0.001A) in standby mode, making it extremely energy-efficient and negligible to your battery's charge level.

Q: Is this suitable for boats and marine applications?

A: Absolutely. The wide operating temperature range (-20°C to 90°C) and robust 240A rating make it an excellent choice for marine and boat applications where reliable battery management is critical.