Description
Car Kill Switch and Remote Battery Disconnect Switch with LED Voltage Display
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A drained battery gets protected: this battery cut off switch cuts power automatically after 120s when voltage drops below 11.8V, saving energy
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Cut power without walking over: the remote works from up to 328 ft away
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No accidental cut-off at the wheel: above 13.2V the remote is disabled, so a stray press cannot kill the power while you drive
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Know your battery's condition: the LED voltage display shows battery voltage in real time
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No cutting into your wiring: the negative link method leaves original vehicle wiring undamaged and can be recovered any time
Whether the battery sits in a car, a boat or an RV, you want to know what it is doing and switch it off on your terms. The LED voltage display shows battery voltage in real time, and the remote works within 328.1 ft (100m). Above 13.2V the remote is disabled, so pressing it by accident while driving cannot cut the power.
A pure copper pillar gives this car battery kill switch better conductivity and no rust, while low power consumption retains car battery power behind an IP54 waterproof housing. Fitted as an RV battery disconnect switch, a boat battery switch or an automotive switch, it suits most 12V vehicles.
Why choose Fewpe
Remote Battery Kill Switch
| Feature |
Fewpe |
Others |
| Remote control works from a distance |
✓ |
Manual only |
| Disabled above 13.2V while you drive |
✓ |
✕ |
| Low-voltage cut-off protects the battery |
✓ |
Varies |
| LED display shows battery voltage live |
✓ |
✕ |
| Installs without damaging vehicle wiring |
✓ |
Varies |
| 30-day easy returns |
✓ |
Varies |
Key Features
The upgraded 12V battery switch is built around a few practical details:
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Upgrade 12V Battery Kill Switch: A pure copper pillar gives no rust and better conductivity, the IP54 waterproof housing protects the internal components, and low power consumption with good stability retains car battery power and extends the life of the car battery.
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Smart Voltage Safety Kill Switch: Below 11.8V the remote kill switch cuts power after 120s to save energy, and above 13.2V the remote control switch is disabled so only the manual switch works, which avoids an accidental cut-off while driving.
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LED Voltage Display and Remote Control: The LED voltage display lets you check the battery voltage in real time, and you can operate this shut off switch within a range of 328.1 ft (100m).
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Easy Install: The negative link method does not damage original vehicle wiring and can be recovered any time. It fits a negative pole of 9-13mm/15-17mm and is not suitable for small vehicles with a pole head. Turn off the power before installation and run an ignition test afterwards.
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Widely Applicable: This remote battery disconnect switch suits most 12V cars, boats, RVs, trailers, trucks, ATVs, UTVs, motorcycles and vehicles with displacement less than 4.0 and rated battery current below 240A, but not small pile head vehicles.
Specifications
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Voltage: 12V
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Ingress rating: IP54 waterproof housing
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Contact material: Pure copper pillar
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Low-voltage cut-off: Below 11.8V, power cut after 120s
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Remote disabled above: 13.2V
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Remote control range: 328.1 ft (100m)
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Negative pole fit: 9-13mm/15-17mm
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Rated battery current: Below 240A
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Vehicle displacement: Less than 4.0
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Display: LED voltage display
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Colors: Red, Gray, Blue
Package Includes:
- 1 x Remote Battery Disconnect Switch Kit
Right for you if
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✓You park a boat or RV for long stretches — it cuts power automatically below 11.8V to save energy
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✓You worry about a stray remote press while driving — the remote is disabled above 13.2V
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✓You want to see battery health at a glance — an LED voltage display shows real-time voltage
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✓You do not want to modify your wiring — the negative link method does not damage original wiring
If two or more of these sound like you, this is the one.
FAQs
Q: What does the car kill switch do when voltage drops?
A: When battery voltage is below 11.8V, the remote kill switch automatically cuts off power after 120s to save energy.
Q: Can I press the remote by accident while driving?
A: Above 13.2V the remote is disabled, so only the manual switch can cut power.
Q: How far does the remote work?
A: You can control the switch within a range of 328.1 ft (100m).
Q: Will it fit my vehicle?
A: It suits most 12V vehicles with displacement less than 4.0 and rated battery current below 240A, with a negative pole of 0.4-0.5 in (9-13mm) or 0.6-0.7 in (15-17mm).
Q: What should I do when installing it?
A: Turn off the power before installation and run an ignition test after installation. It installs on the negative pole without damaging original vehicle wiring.
