FENGWANGLI Remote Battery Disconnect Switch 12V 200A — Wireless Kill Switch, Anti-Theft & Auto Voltage Cutoff

FENGWANGLI Remote Battery Disconnect Switch is a 12V, 200A wireless kill switch that instantly isolates your vehicle battery to prevent drain and unauthorized starts.

This compact remote battery disconnect system uses a mechanical magnetic contactor and a low standby draw design to protect 12V vehicle batteries while parked. It includes automatic cut-off logic that responds to battery voltage and a handheld remote for manual control. The unit is rated for a 200A continuous load and a 360A peak starting current, making it suitable for cars, trucks, ATVs, RVs and marine use where preventing parasitic drain and theft is a priority.

How does the FENGWANGLI switch stop battery drain?

The switch physically disconnects the negative battery terminal using a magnetic contactor with an extremely low standby current, minimizing parasitic draw when the vehicle is off. It also features an automatic voltage-triggered cutoff to protect the battery from deep discharge during long storage.

• Mechanical magnetic contactor reduces leakage to about 0.003A.
• Auto-cut triggers if voltage falls below 11.8V for 120 seconds.
• Manual remote allows quick re-connection without tools.
• Rated for 200A continuous and 360A starting surge.

Can this kill switch prevent theft or tampering?

Yes—by breaking the battery connection the unit makes it difficult for an unauthorized person to start or power the vehicle. The remote control is disabled above a defined voltage threshold so accidental in-drive activation is prevented, reducing the risk of unintended power cut while driving.

• Remote on/off control for quick immobilization.
• Automatic lockout when voltage exceeds 13.2V to avoid in-motion shutdown.
• Compact mounting reduces visibility to would-be thieves.
• Interrupts both starting and accessory circuits when open.

How simple is installation and day-to-day use?

Installation was simplified in this version by reducing extra wiring: the negative clip attaches to the battery negative post and the red lead connects to the positive, with the main unit mounted nearby. Everyday use is straightforward—press the remote to cut or restore power, or let the automatic voltage rules manage it for you.

• Direct negative pole clip for fast attachment to the battery.
• Simplified wiring reduces installation time and error points.
• Handheld remote for convenient on/off operation up to its specified range.
• Automatic re-enable when proper voltage conditions return.

What vehicles and conditions is this switch designed for?

The switch is made for any 12V electrical system that needs reliable battery protection and theft deterrence—cars, trucks, SUVs, ATVs, UTVs, RVs, campers and many boats. With a robust current rating it supports typical starter draws and accessory loads encountered in most light-vehicle applications.

• Suitable for 12V cars, trucks, RVs, ATVs, and marine craft.
• Handles 200A continuous and 360A peak starting current.
• Works well for seasonal storage or long-term parking.
• Compact form factor fits under hoods, in battery compartments, or in accessory boxes.

Who is this for? The FENGWANGLI Remote Battery Disconnect Switch is aimed at vehicle owners who want a practical anti-theft measure, those who store vehicles seasonally, and anyone needing to prevent parasitic drain from aftermarket electronics. It’s also useful for fleet operators, marine owners and off-road enthusiasts who need a durable, high-current disconnect that’s simple to install and operate.