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10 Best post knife blades of 2026
Explore top picks
Best Choice1
COZYEHOOTop Post Knife Blade Master Switch 12V 24V Battery Disconnect Cut Off Shut Off for Auto Car RV-Marine Boat Truck Vehicle (Negative, Vertical & Horizontal)
9.9Exceptional
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Value for Money2
COZYEHOOTop Post Knife Blade Master Switch 12V 24V Battery Disconnect Cut Off Shut Off for Auto Car RV-Marine Boat Truck Vehicle (Negative,Vertical)
Key specs-
Material:Brass
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Rated Current:250A
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Mounting Type:Top post
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Instantaneous Current:750A
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Rated Voltage:6v 12v 24v
9.8Exceptional
Our Rating
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3
SylvilSylvil Knife Blade Master Switch, 3.7"× 3.1" Side Post Knife Blade Battery Disconnect Switch, Power Battery Quick Shutoff Switch Horizontal Blade for Boat Truck RV, Car Accessories (Circular Hole)
9.6Exceptional
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4
COZYEHOOSide Post Knife Blade Master Switch 12V 24V Battery Disconnect Cut Off Shut Off for Auto Car RV-Marine Boat Truck Vehicle
9.5Excellent
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5
AmpperAmpper Side Post Battery Disconnect Switch 12V 24V, Knife Blade Battery Switch Disconnect Power Cut Shut Off for Car Boat RV ATV (with Long Bolt)
Key specs-
Material:Solid brass
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Rated Current:200A continuous
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Mounting Type:Side post terminal
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Instantaneous Current:600A momentary
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Rated Voltage:DC 12V-24V
9.3Excellent
Our Rating
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6
SandfrenSandfren Car Battery Disconnect Switch, 12V 24V 250A Brass Top Post Knife Blade Master Cut Off Switch, Automotive Shut Off Kill Power Isolator, Universal for Truck, ATV, Motorcycle
9.2Excellent
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7
SDZONGESSDZONGES Battery Disconnect Switch, Battery Cut Off Shut Off Kill Switch 12v 24v, Top Post Knife Blade Master Switch for Marine Car Boat RV ATV Vehicles(Negative).
9.1Excellent
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8
A ABIGAILTop Post Negative Battery Disconnect Switch 12V / 24V 250/750 Amps Knife Blade Isolator Power Cutoff Switch for Marine Car Boat RV ATV (Horizontal and Vertical)
8.8Very Good
Our Rating
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9
GenericTop Post Battery Disconnect Switch 12v 24v - Knife Blade Master Switch Battery Cut Off 250/750 Amps - Knife Blade Isolator Power Cutoff for Car, Truck, Boat (Negative, Vertical)
8.6Very Good
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10
TESHITVLOGTop Post Knife Blade Master Switch, 12V / 24V Battery Disconnect Switch for Marine Car Boat RV Truck Vehicles,Battery Kill Switch(Negative, Vertical)
8.5Good
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